SOLUTION: If an order is written for 500mls of 15% solution and all you have in stock is 10% and 70%. How many mls of each will you need to compound order? The answer in book say's 70%is41.

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: If an order is written for 500mls of 15% solution and all you have in stock is 10% and 70%. How many mls of each will you need to compound order? The answer in book say's 70%is41.      Log On


   



Question 610452: If an order is written for 500mls of 15% solution and all you have in stock is 10% and 70%. How many mls of each will you need to compound order? The answer in book say's 70%is41.67mls and 10% 458.33mls don't understand how to do it?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If an order is written for 500mls of 15% solution and all you have in stock is 10% and 70%. How many mls of each will you need to compound order?
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Do these like this:
t = 10%
s = 70%
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t + s = 500 (total solution)
10t + 70s = 500*15 (total ingredient)