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200 litres of a mixture contains milk and water in the ratio 17 : 3. After the addition of some more milk to it, the ratio of milk to water in the resulting mixture becomes 7 : 1. The quantity of milk added to it was
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- 20 litres
- 40 litres
- 60 litres
- 80 litres
Correct Option: B
Let the quantity of additional milk added = x litres
In the mixture of 200 litres,
| Quantity of milk = | × 200 | |
| 20 |
= 170 litres
Quantity of water = 30 litres
According to the question,
| = | ||
| 30 | 1 |
⇒ 170 + x = 210
⇒ x = 210 – 170
= 40 litres
