Question

Clare is painting some doors that are all the same size. She used 2 liters of paint to cover 1 ⅗ door. How many liters of paint are needed for 1 door?

Answer 1

Answer: 1.25 litres

Explanation:

Two litres of paint is sufficient to paint 1 ⅗ doors.

To find out the amount of paint needed to paint one door, you can use direct proportion:

2 litres : 1 ⅗ door

x 1 door

Cross multiply to get:

1 ⅗ x = 2

x = 2 / 1 ⅗

x = 2 ÷ 8/5

x = 2 * 5/8

x = 1.25 litres