Question

The milk and water in a mixture are in the ratio 7 :5. When 15 liters of water are added to it, the ratio of milk and water in the new mixture becomes 7 :8. The total quantity of water in the new mixture is:
A.35 lit
B.40 lit
C.60 lit
D.96 lit

Answer 1

i think the answer is   A   hope this helped :))

Answer 2

Answer:

• Quantity of water in new mixture =  5 x + 15 = 25 + 15 = 40 lit.

Step-by-step explanation:

• Let milk be 7 x and water be 5 x .

A/Q, 7x/(5x+15) = 7/8

⇒ 56 x = 35 x + 105

⇒ 56x - 35x = 105

⇒ 21  x = 105

∴ x = 5.