Question by Summer Clouds - Discuss with MathYouLike

Summer Clouds moderators

17/10/2017 at 10:39

A mixture of $30$ liters of paint is $25\%$ red tint, $30\%$ yellow tint and $45\%$ water. Five liters of yellow tint are added to the original mixture. What is the percent of yellow tint in the new mixture?

$\textbf{(A)}\ 25 \qquad \textbf{(B)}\ 35 \qquad \textbf{(C)}\ 40 \qquad \textbf{(D)}\ 45 \qquad \textbf{(E)}\ 50$

List of answers

Dao Trong Luan Coordinator 17/10/2017 at 12:01

The yellow tint of first mixture is:

30.30% = 9 [litters]

The yellow tint of after mixture is:

9 + 5 = 14 [liters]

The liters of after mixture is:

30 + 5 = 35 [liters]

The percent of yellow tint in the new mixture is:

14: 35.100 = 40%

So choose C

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