Solve the problem.
-A chemist needs 190 milliliters of a 66% solution but has only 42% and 99% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A)80 mL of 42%; 110 mL of 99%
B)110 mL of 42%; 80 mL of 99%
C)70 mL of 42%; 120 mL of 99%
D)120 mL of 42%; 70 mL of 99%

Question

Quizplus · Accepted Answer

To solve, set up the equation: 0.42x + 0.99(190-x) = 0.66(190). Solving gives x = 110 mL of 42% and 80 mL of 99%.

Solve the Problem. -A Chemist Needs 190 Milliliters of a 66% Solution but 66