Profit and Loss Practice Test 7

Question : 16 of 40

Marks: +1, -0

A person has a chemical of Rs 25/litre. In what ratio should water be mixed in that chemical so that after selling the mixture at Rs 20/litre, he may get a profit of 25%?

12 : 15
16 : 9
13 : 16
19 : 22

Validate

Solution:

Let the cost price = x
Profit per cent = 25%
Sale price

=x+{25x}/100=125/100x

According to the statement,

5/4x=20

x={20×4}/5=16

per litre
By using alligation method,

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