Jan and Jerome are mixing red paint with white paint to make pink paint, in the ratio of 4 parts red to 5 parts white. How many gallons of red paint should they mix with 1 gallon of white paint? Express your answer as a common fraction

0.8 gallons of red paint or 4/5 gallons of red paint

Step-by-step explanation:

Jan and Jerome are mixing red paint with white paint to make pink paint, in the ratio of 4 parts red to 5 parts white. How many gallons of red paint should they mix with 1 gallon of white paint? Express your answer as a common fraction

How many gallons of red paint should they mix with 1 gallon of white paint?

Let parts be represented as x

Hence:

Red : white

4 : 5

4/5 = x/ 1

We cross Multiply

5x = 4

x = 4/5

x = 0.8 gallons of red paint or 4/5 gallons of red paint