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In 40 litres mixture of milk and water t...

In 40 litres mixture of milk and water the ratio of milk to water is 7: 1. In order to make the ratio of milk and water 3: 1, the quantity of water (In Ittres) that should be added to the mixture will be

A

3

B

4

C

5

D

11

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The correct Answer is:
C
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ARIHANT SSC-SEQUENCE, SERIES & PROGRESSIONS-EXERCISE LEVEL-2
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  11. What is the sum of n terms of the series -1 + 1^2 - 2 + 2^2 - 3 + 3^2 ...

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