Question

A man buya milk at Rs.1.80 per litre mixes it with water and sells the mixture at the same price .how much water is added to each litre of milk if his profit is 10%

Answer 1

Answer:

90.9 ml

Explanation:

1L = 1000ml

water added : x ml per 1000ml of milk

milk in the mixure : (1000 - x ) ml

CP (pure milk) : ₹1.80/L

CP ( mixure ) : ₹ 1.80/L

CP (milk in mixure ) = ₹1.80 × (1000 - x)/(1000)

profit % = 10%

SP (milk in mixure) : ₹1.80

SP ( pure milk ) : 110/100 (1000 - x)/(1000) ×1.8

but SP (milk in mixure) = SP ( pure milk )

110/100 (1000 - x)/1000 ×1.80 = 1.80

x = 90 +(10/11)

hence water added : 90.9 ml