A mixture contains milk and water in the ratio 5 : 1. On adding 5 litres of water, the ratio of milk and water becomes 5 : 2. The quantity of milk in the mixture is :
1). 25 litres
2). 32.5 litres
3). 16 litres
4). 22.75 litres
Quantity of milk in the mixture
= 5x litres
Quantity of water = x litres
According to the question,
On adding 5 litres of water,
$\therefore\frac{5x}{x+5}$ = $\frac{5}{2}$
=> 10x = 5x + 25
=> 5x = 25
x = 5
Required quantity of milk
= 5 × 5 = 25 litres