Question

A painter is to mix green and yellow paint in the ratio of 4 to 7 to obtain the color she wants.

If she has 28 liters of green paint, how many liters of yellow paint should be added?
A. 11
B. 16
C. 28
O D. 49
E. 196

Answer 1

D. 49

Explanation:

Create a proportion where x is the number of liters of yellow paint she should use:

`(4)/(7)` =
`(28)/(x)`

Cross multiply and solve for x:

4x = 196

x = 49

So, she should add 49 liters of yellow paint.

The correct answer is D. 49