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Question

A milkman purchases milk at Rs 20/litre and mixes 4 litres of water in it. By selling the resultant mixture at the rate of Rs 20/litre, he earns a profit of 40%. The amount of mixture he had with him to sell was:

CAT 2021

A
10 litres
CORRECT ANSWER WRONG ANSWER
B
12 litres
CORRECT ANSWER WRONG ANSWER
C
14 litres
CORRECT ANSWER WRONG ANSWER
D
4 litres
CORRECT ANSWER YOUR ANSWER
Solution

Correct option is

(C)

Explanatory Answer :

To earn a profit of 40% at Rs 20/litre,

Cost price = 20/1.4 = 100/7

100/7--------20

100/7-------100/7-0

100/7--------20-(100/7)

100/7-------0(since water does not cost anything) Therefore,

Milk: Water = 100/7 : 40/7 = 5:2

So, in 4 litres of water, 10 litres of milk would be required. Resultant mixture = 14 litres

The question is "The amount of mixture he had with him to sell was:"

Hence, the answer is "14 litres".

C is the correct option