A milkman purchases the milk at Rs. x per litre and sells it at Rs. 2x per litre still he mixes 2 litres water with every 6 litres of pure milk. What is the profit percentage?
Let the C.P of 1 liter pure milk be Rs 1 , then
6 l milk cost ___ 6 rupees = Rs 6 only
2 l water cost ___ 0 rupees
8 liter mixture ⇒ S.P = 8×2=16 ruppes
profit % = 16−66×100=10×1006=5×1003=166.66%