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Old 09-10-2010, 17:13   #1
cziv
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Need Help With a Math Problem!!

I ususally mix two powders together at a 1 to 1 ratio.

I had a large amount of powder given to me and I didn't have equal parts and having a brainfart, I mixed them together and now I'm stuck with a difficult math problem.

Here it is.

I mixed 16 ounces of X with 6 ounces of Y giving me a non- 50/50 mixture. I found another 6 ounces of Y today.

How much of the XY blend would I have to siphon off so that I can add the additional 6 ounces and end up with a 50/50 mixture of X & Y?

Thanks in advance!!
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Old 09-10-2010, 17:17   #2
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Why would you mix powder together do you have a death wish?
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Old 09-10-2010, 17:20   #3
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please, tell me this is a joke.

IGF
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The fire is no longer my major concern since I am leaving immediately on an unexpected road trip to Indianapolis. Watch the national news over the next couple of days, I'll wave... well, only if I'm cuffed in the front.
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Old 09-10-2010, 17:20   #4
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Too tough for you too huh?
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Old 09-10-2010, 17:22   #5
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Not even a funny one.
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Old 09-10-2010, 17:26   #6
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No this isn't a joke. It's a serious math problem. If you can't solve it please keep your ridicule to yourself and get in line with me, cuz I can't either.
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Old 09-10-2010, 17:32   #7
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Quote:
Originally Posted by cziv View Post
No this isn't a joke. It's a serious math problem. If you can't solve it please keep your ridicule to yourself and get in line with me, cuz I can't either.
Trust me, I can do the math, I WON'T do the math for you... You're going to get yourself hurt, and I won't be a party to that.

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The fire is no longer my major concern since I am leaving immediately on an unexpected road trip to Indianapolis. Watch the national news over the next couple of days, I'll wave... well, only if I'm cuffed in the front.
RIP Jack
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Old 09-10-2010, 17:33   #8
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Answer:

You can't. Buy four more oz of Y
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Old 09-10-2010, 17:34   #9
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It probably would be easier for you to calculate had you still had all 10 fingers.
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Old 09-10-2010, 17:34   #10
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Old 09-10-2010, 17:41   #11
Batesmotel
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It is physically impossible to mix two powders and have the same mix each time you measure a charge. This is why every reloading manual states

DO NOT MIX POWDERS

Or do you think you are too smart for the basic safety rules of reloading?
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Old 09-10-2010, 17:42   #12
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Quote:
Originally Posted by cziv View Post
I ususally mix two powders together at a 1 to 1 ratio.

I had a large amount of powder given to me and I didn't have equal parts and having a brainfart, I mixed them together and now I'm stuck with a difficult math problem.

Here it is.

I mixed 16 ounces of X with 6 ounces of Y giving me a non- 50/50 mixture. I found another 6 ounces of Y today.

How much of the XY blend would I have to siphon off so that I can add the additional 6 ounces and end up with a 50/50 mixture of X & Y?

Thanks in advance!!
Quote:
Originally Posted by cziv View Post
Too tough for you too huh?
Quote:
Originally Posted by cziv View Post
No this isn't a joke. It's a serious math problem. If you can't solve it please keep your ridicule to yourself and get in line with me, cuz I can't either.
Reloading
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Old 09-10-2010, 17:44   #13
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Reloading
Same here but I have seen some stupid things in my time.
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Old 09-10-2010, 17:48   #14
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Jeez guys, lighten up. Back in Jack's day when there were only 8 powders to choose from people would mix powders all the time.

BTW,
you'd need to siphon off 8.8 ounces (this would remove 6.4oz of X and 2.4oz of Y, leaving 9.6oz of X and 3.6oz of Y).

The 8.8 ounces you take out would then need 4 ounces of Y added to it to be an equal mix, if at some point you want to use what you siphon off.




Last edited by XDRoX; 09-10-2010 at 17:48..
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Old 09-10-2010, 17:48   #15
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Gonna have to remove approx 9 oz of the mix to be able to add 6 oz pure 2nd powder and come up with a 50/50 ratio... This would be the equivalent of adding 9.35 oz to 9.5 oz... not quite 50/50 but pretty close...

I'm assuming your are working on spices for a beef spare rib rub - correct?

If this is for gunpowder - you gotta ignore what I said and start all over again... my disclaimer...)

ETA - When I said approx 9 oz - the numbers I used were 8.75 oz removed so it pretty much matches the 8.8 stated above...
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Old 09-10-2010, 17:49   #16
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Please be a JOKE. Because the KABOOM will not be....
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Old 09-10-2010, 17:49   #17
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Quote:
Originally Posted by marklukich View Post
Gonna have to remove approx 9 oz of the mix to be able to add 6 oz pure 2nd powder and come up with a 50/50 ratio... This would be the equivalent of adding 9.35 oz to 9.5 oz... not quite 50/50 but pretty close...

I'm assuming your are working on spices for a beef spare rib rub - correct?

If this is for gunpowder - you gotta ignore what I said and start all over again... my disclaimer...)
Beat you to it Mark
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Old 09-10-2010, 17:52   #18
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Quote:
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Beat you to it Mark
But did you use a calculator? I used the back of a bank statement envelope... lol..
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Old 09-10-2010, 17:56   #19
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Mix ratio

First, I don't recommend doing what you are doing. With that being said here is an Example of a possible solution. The mix you have now - 16oz. X powder + 6 oz Y powder = 22 oz total. This is almost 3 to 1 ratio but easier to do in percentages. The mix now is 72.75% X and 27.25% Y. If you take 8 oz. out that leaves you with 14 oz mix which is 10.18 oz. of X powder and 3.81 oz of Y powder. If you add your new 6 oz. of Y to the 14 oz mixture you will end up with 9.81 oz of Y and 10.18 oz. of X. This is .37 oz or 1/3 of an oz. off of a 50/50 mix.
Again I dont recommend ever mixing powders and this is something I would not do.
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Old 09-10-2010, 17:57   #20
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I am beginning to see the light. You know when I switch from win 231 to WSF I have to adjust the powder measure. If I blended them together I could use a weight in between and never have to adjust my load again.
Wow I could pick up another nick name and everyone could just call me lefty.
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Old 09-10-2010, 18:02   #21
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Powders

Just because this is on GT doesn't mean it's gun powder. Maybe it's just talcum powder and baking powder. Or, baby powder and onion powder. Athletes foot powder and lice powder. You get the jist. Although why he'd be mixing any of the above is beyond me. As far as the math problem is concerned, I suggest contacting one of oBUMa's financial czars. They work wonders with numbers.
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Old 09-10-2010, 18:04   #22
cziv
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Thanks you guys who helped! I've been shooting this mix for years w/o any problem. Not a heavy load just using up some very compatible powders from 2 other guns and using it in a 3rd one. I have all of my digits and brains intact. Honest.
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Old 09-10-2010, 18:07   #23
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Quote:
Originally Posted by cziv View Post
Thanks you guys who helped! I've been shooting this mix for years w/o any problem. Not a heavy load just using up some very compatible powders from 2 other guns and using it in a 3rd one. I have all of my digits and brains intact. Honest.
You were serious about it being a powder problem.
For the record I have never been that good in math. Better check my numbers.
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Old 09-10-2010, 18:11   #24
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Let me help out. Your mixture now contains 22oz of 72.8% "X" powder and 27.2% "Y" powder.
Subtracting 8.5oz of the mixture removes 6.19oz of "X" powder (16oz-6.19oz=9.81oz) leaving you with 9.81oz of "X" in the original mixture.
When you subtracted that same 8.5oz you also removed 2.31oz of "Y" powder (6oz-2.31oz=3.69oz ) leaving you with 3.69oz of "Y" powder in the original mixture.
When you add your new 6oz of "Y" powder (6oz+3.69oz=9.69oz) you now have a total of 9.69oz of "Y" powder in the original mixture.
You now have 9.81oz of "X" and 9.69oz of "Y". I, based on my experience I submit that that is close enough.
Feel free to check my calculations.
So, I am not alone.
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Old 09-10-2010, 18:52   #25
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Guys, I have a similar problem. I have one pound of Bullseye and two pounds of Unique. The ratio I want is easy 1:2.

The problem is that the Bullseye is on a train leaving Chicago and heading east at 100 MPH at 0300 and the Unique is on a west bound train leaving New York at 75MPH at 0100. I need to know where I should be standing when the trains collide and the powders mix. I used to be real good at these problems but getting good math scores on the SAT's is a persihable skill. Can someone help me out?
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