Question

In a mixture of 120 litres the ratio of milk and water is 3:1. If this ratio is to
be made as 1:3 then how many litres of water is required to be added to
this mixture?
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Answer 1

${\red{\bf{\huge{Smile!}}}}$

Ratio of milk to water

3:1

let ratio of milk be x

3x/1=120

x=120/3

x=40

litres of water to be added is 120