Question

A certain paint is to be mixed with 3 parts yellow to 2 parts blue. Twelve gallons of mixed paint are needed. How many gallons of blue must be used

Answer 1

`Blue = 4.8 \ Gallons`

Explanation:

Given

`Y : B = 3 ; 2`

Required

Find the number of blue paints in 12 gallons

Start by representing the blue part of the ratio as a fraction

`Y : B = 3 ; 2`

`B = (2)/(2 + 3)`

`B = (2)/(5)`

This means that:

`Blue = (2)/(5) * 12\ Gallons`

`Blue = (24)/(5) \ Gallons`

`Blue = 4.8 \ Gallons`