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1. A dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 25%. The percentage of water in the mixture is:





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  • By: guest on 01 Jun 2017 05.43 pm
    Let C.P. of 1 litre milk be Re. 1 Then, S.P. of 1 litre of mixture = Re. 1, Gain = 25%. C.P. of 1 litre mixture = Re. 100 x 1 = 4 125 5 By the rule of alligation, we have: C.P. of 1 litre of milk C.P. of 1 litre of water Re. 1 Mean Price
    Re. 4 5 0 4 5 1 5 Ratio of milk to water = 4 : 1 = 4 : 1. 5 5 Hence, percentage of water in the mixture = 1 x 100 % = 20%. 5
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