20 litres of a mixture contains milk and water in the ratio of 5:3. If four litres of this mixture is replaced by four litres of milk, then the ratio of the milk to that of the water in the new mixture will be `2:3` b. `4:3` c. `5:3` d. `7:3`

Options

A. `2:1`
B. `7:3`
C. `8:3`
D. `4:3`

Answer

B

Explanation

Quantity of milk in 16 litres of mix.
`=(16xx(5)/(8))` litres =10 litres
Quantity of milk in 20 litres of new mix `=(10+4)` litres
Quantity of water in it `=(20-14)` litres =6 litres
`therefore` Ratio of milk and water in the new mix `=14:6=7:3` .