Question

in what proportion should water be mixed in a liquid of rs.12 per litre, so that when it is sold at rs.13.75 per litre, there is a 25%proit

Answer 1

The cost per litre of water=12L
The cost per litre while change price of water=13.75L
The percentage of the price of while it's profit=25%
The proportion of water with profit =13.75÷100×25
=13.75÷4
=3.4375L

So, the proportion of water be mixed in a liquid is 3.4375L

Hope it help
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