SOLUTION: How many milliliters of 22% acid are mixed with 23 milliliters of 5% acid to produce a mixture that is 10% acid? Round to the nearest whole number.

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Question 759123: How many milliliters of 22% acid are mixed with 23 milliliters of 5% acid to produce a mixture that is 10% acid? Round to the nearest whole number.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
How many milliliters, v, of H% acid are mixed with U milliliters of L% acid to produce a mixture that is T% acid? Round to the nearest whole number.

Some requirement of order in those variables is 0%3CL%3CT%3CH%3C100.

%28LU%2BHv%29%2FM=T and U%2Bv=M.
The only unknown variable is v. Solve the system for v. Actually, only one equation is needed. The material sum equation for M can be used directly giving:

highlight%28%28LU%2BHv%29%2F%28U%2Bv%29=T%29
As directed, solve for v.