Latest CDS Aptitude Question SOLUTION: Two vesssel A and B contain milk and water in the ratio 7:3 and 3:2.find the ratio in which quantities be taken from the two vessels so that the ratio of milk and water in the n

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(#M40155105) CDS Category question SS Keep an EYE

Two vesssel A and B contain milk and water in the ratio 7:3 and 3:2.find the ratio in which quantities be taken from the two vessels so that the ratio of milk and water in the new mixture is 2:1.

Asked In CDS MohanRaj (9 years ago)

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RAHUL AGARWAL  (9 years ago)

Let the CP of milk be rs 1/litre
milk in 1litre mixture of A= 7/10 L ; CP of 1L mix. in A =7/10
milk in 1L mix. of B= 3/5 L ; CP of 1L mix. in B = 3/5
milk in 1L mix. of C= 2/3 L ; Mean price =2/3
By rule of alligation
Required ratio= (CP of 1L mix. in B - mean price)/ (mean price - CP of 1L mix. in A)
= (3/5-2/3)/(2/3-7/10)
=(-1/15)/(-1/30)
=2:1 (ans)

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