Book Maths Puzzle

In what ratio must water be mixed with milk costing Rs.12 per litre in order to get a mixture worth of Rs.8 per litre?

Read Solution (Total 2)

Cost of water per liter = 0Rs.
Cost of milk per liter = 12Rs.
Mean price = 8Rs.

Therefor-
Quantity of Cheaper / Quantity of Dearer = (12 - 8)/ (8 - 0) = 4/8 = 1/2
9 years agoHelpfull: Yes(2) No(0)

72-(64.50):64.50-72=3:1
11 years agoHelpfull: Yes(0) No(1)

Book Other Question

In what ratio must tea at Rs.62 per Kg be mixed with tea at Rs. 72 per Kg so that the mixture must be worth Rs. 64.50 per Kg? A container contains a mixture of two liquids P and Q in the ratio 7 : 5. When 9 litres of mixture are drawn off and the container is filled with Q, the ratio of P and Q becomes 7 : 9. How many litres of liquid P was contained in the container initially?