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A, B and C together earn ₹ 375 in 5 days. A and B together earn ₹ 450 in 10 days. A and C together earn ₹ 200 in 4 days. Find the daily earning of each.
A , B and C
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- 25 , 30 , 20
- 20 , 25 , 30
- 30 , 25 , 20
- 30 , 20 , 25
Correct Option: B
Given in the given question ,
A, B and C together earn in 5 days = ₹ 375
| Daily earning of A, B and C = ₹ | 375 | = ₹ 75 | 5 |
A and B together earn in 10 days = ₹ 450
| Daily earning of A and B = ₹ | 450 | = ₹ 45 | 10 |
A and C together earn in 4 days = ₹ 200
| Daily earning of A and C = ₹ | 200 | = ₹ 50 | 4 |
∴ Daily earning of C = Daily earning of ( A + B + C ) - Daily earning of ( A + B ) = 75 - 45 = ₹ 30
Daily earning of A ⇒ A + 30 = 50 ⇒ A = 50 - 30 ⇒ A = ₹ 20
And Daily earning of B ⇒ A + B = 45 ⇒ 20 + B = 45 ⇒ B = 45 - 20 = ₹ 25
