Suppose 2.5 liters of milk costs Rs 20 and we add some water to it. For what ratio of water and milk will the mixture cost Rs 5 per liter?
Answer & explanation
Correct answer: option 2
let C = Rs. 0 / liter , D = Rs. 8 / liters and M = Rs. 5 / liters
Then the ratio of water: milk is (D-M): (M-C)