Question

80 L of mixture of milk and water is in the ratio 5 : 3. If 16 L of this mixture is replaced by 16 L of milk, ratio of milk and water becomes

• A. 2 :1
• B. 6 : 3
• C. 7 : 3
• D. 8 : 3

Answer 1

The correct option is C 7 : 3

Quantity of milk in 80L mixture=$\frac{5}{8}\times 80=50L$
Quantity of water in 80 L mixture=$80-50=30L$
16 L mixture replace by 16 L milk then new mixture=$80-16=64L$
Quantity of milk in 64 L mixture=$\frac{5}{8}\times 64=40+16=56L$
Quantity of water in 64 L mixture=$\frac{3}{8}\times 64=24L$
Ratio of milk and water in new mixture=$56:24$
$7:3$