In what ratio must water be mixed with milk to gain 30% by selling the mixture at the cost price of milk?
Answer & explanation
Correct answer: option 3
Let CP of milk be Re.1 per liter = SP of the mixture Gain % = 30% So CP of mixture = Rs (10/13) per liter let C = Rs. 0 /liter , D = Rs. 1 / liter and M = Rs.(10/13) / liter Then the ratio of mixes is (D-M): (M-C)