A chocolate drink is $6 \%$ pure chocolate, by volume. If 10 litres of pure milk are added to 50 litres of this drink, the percent of chocolate in the new drink is
(A) 5
(B) 16
(C) 10
(D) 3
(E) 26
A chocolate drink is $6 \%$ pure chocolate, by volume. If 10 litres of pure milk are added to 50 litres of this drink, the percent of chocolate in the new drink is
(A) 5
(B) 16
(C) 10
(D) 3
(E) 26

## Solution

If $6 \%$ of the 50 litres is pure chocolate, this means that there will be three litres of pure chocolate in the final mixture. If the final mixture contains sixty litres of which three litres are pure chocolate this represents $\frac{3}{60}$ or $5 \%$ of the total.