SSC CHSL 6 Dec 2015 Shift 1 Paper

Question : 138 of 200

Marks: +1, -0

In what proportions must water be added with milk to gain 20% by selling the mixture at cost price ?

Solution:

For 100 litres of milk to get 20% profit, we need to sell =

100+(20/100×100)=120

litres
Thus, water added =

120-100=20

litres
⇒ Required ratio =

20/100=1:5

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