Solve the problem.A chemist needs 70 milliliters of a 63% solution but has only 51% and 79% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 20 ml of 51%; 50 ml of 79%
B. 40 ml of 51%; 30 ml of 79%
C. 30 ml of 51%; 40 ml of 79%
D. 50 ml of 51%; 20 ml of 79%
Answer: B
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