SSC CHSL 20 Dec 2015 Shift 2 Paper

Question : 143 of 200

Marks: +1, -0

Two vessels contain mixture of petrol and kerosene in the ratio 4 : 3 and 3 : 5 respectively. The ratio of the volumes of the quantities from the two vessels to be mixed together so that the new mixture may contain same volume of petrol and kerosene is

Validate

Solution:

Ratio of petrol and whole mixture in 1st vessel =

4/7

Ratio of petrol and whole mixture in 2nd vessel =

3/8

Also, ratio of petrol and whole mixture in the final mixture =

1/2

By alligation method,

⇒ Petrol : Kerosene =

1/8:`1/14=14:8

= 7:4

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