Arithmetic-14 (CAT-2004)

A milkman mixes 20 litres of water with 80 litres of milk. After selling 1/4^th of this mixture, he adds water to replenish the quantity that he has sold. What is the current proportion of water to milk?

(1) 2:3

(2) 1:3  

(3) 1:2  

(4) 3:4

For Answer Click on "Read more" below:

Solution:

The following table represents step by step transactions:

	Water	Milk	total
	20	80	100
sold 1/4th	20/4 = 5	80/4 = 20	25
Remaining quantity	20-5 = 15	80-20 = 60	75
added water	15+25 = 40
Final quantity	40	60

Final proportion of water to milk = 40:60 = 2:3

Answer (1)