Question

5. A painter uses paint and thinner in the ratio 60:40. He uses 15 litres of paint to paint a house. How much thinner will he use?

Answer 1

60u=15 litres
1u=15l÷60
=0.25l
40u=0.25l×40u
=10l
Ans:10 litres of paint thinner

Answer 2

10 liters of the paint will be used to paint the house.

Explanation:

A painter uses the paint and thinner in the ratio of 60 : 40.

He uses 15 liters of paint to paint a house.

Let he uses x liters of the thinner with the paint.

Then the ratio of paint and thinner will be 15 : x

Since 15 : x is same as 60 : 40 then

`(15)/(x)= (60)/(40)`

x =
`(40* 15)/(60)`

= 10 liters

Therefore, 10 liters of thinner will be used to paint the house.