-
20 litres of a mixture contains milk and water in the ratio 3 : 1. Then the amount of milk to be added to the mixture so as to have milk and water in ratio 4 : 1 is :
-
- 7 litres
- 4 litres
- 5 litres
- 6 litres
Correct Option: C
In 20 litres of mixture,
| Milk ⇒ | × 20 = 15 litres | |
| 4 |
| Water ⇒ | × 20 = 5 litres | |
| 4 |
Let the quantity of milk added be x litres.
According to the question,
| = | ||
| 5 | 1 |
⇒ 15 + x = 4 × 5
⇒ x = 20 – 15 = 5 litres
