1.

Pure milk cost ₹20 per litre. After adding water the milkman sells the mixture at the rate is ₹ 18 per litre , thereby making a profit of 25%. In what ratio does the mix the two ?

Answer»

`18:7`
`18:5`
`12:7`
`12:5`

Solution :Mean cost price `=₹ ((100)/(125)xx18)=₹ 14.4` per LITRE
By the rule of alligation CP of 1L milk CP of 1 L water

Required rate `=144:56=18:7`.


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