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by rajan_agarwal » Mon Dec 07, 2015 3:05 am
Q. ) If certain litres of Milk was mixed with 10 litres of water, the mixtures costs Rs 42/litre. If milk's cost was Rs 56/litre, how much litres of milk were mixed?
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by MartyMurray » Mon Dec 07, 2015 5:18 am
Assume that water has zero cost. The amount of milk is M.

0(10) + 56(M) = 42(10 + M)

56M = 420 + 42M

14M = 420

M = 30
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