Query Detail : SSC CGL Tier I

A container is filled with a mixture of water and milk in the ratio of 3 : 5. Find the quantity of mixture to be drawn off and replaced with water, in order to get the mixture as half milk and half water. Correct answer: 1:5.
Garima,   November 18th 2019,  
SSC CGL Tier I


let intitial water = 3x and intitial milk = 5x so total intitial mixture = 3x+5x = 8x

So let mixture drawn = 8y

So ATQ, (3x-3y+8y)/(5x-5y) = 1/1

(3x+5y)/(5x-5y) = 1/1

3x+5y = 5x - 5y

2x = 10y

x = 5y

So required ans = 8y/(8x) = y/x = y/(5y) = 1/5