In two vessels, A and B, there is mixture of milk and water, The ratio of milk and water in these vessels is `5:2 and 8:5` respectively. In water ratio these mixture be mixed togather so that the ratio of milk and water in the new mixture becomes `9:4` ?

Options

A. `7:2`
B. `2:7`
C. `3:5`
D. `5:3`

Answer

A

Explanation

Milk in 1 litre of `A =(5)/(7)` litre
Milk in 1 litre of `B =(8)/(13)` litre
Milk in 1 litre of mixture `=(9)/(13)` litre

`therefore` Requried ratio ` =(1)/(13):(2)/(91)=7:2`