Solve
-A Chemist Needs 120 Milliliters of A 78 $78 \%$

Solve.
-A chemist needs 120 milliliters of a $78 \%$ solution but has only $57 \%$ and $93 \%$ solutions available. Find how many milliliters of each that should be mixed to get the desired solution.

A) $70 \mathrm { ml }$ of $57 \% ; 50 \mathrm { ml }$ of $93 \%$
B) $55 \mathrm { ml }$ of $57 \% ; 65 \mathrm { ml }$ of $93 \%$
C) $55 \mathrm { ml }$ of $57 \% ; 70 \mathrm { ml }$ of $93 \%$
D) $50 \mathrm { ml }$ of $57 \% ; 70 \mathrm { ml }$ of $93 \%$