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Given that 10% of A’s income = 15% of B’s income = 20% of C’s income. If sum of their income is ₹ 7800, then B’s income is:
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- ₹ 3600
- ₹ 3000
- ₹ 2400
- ₹ 1800
Correct Option: C
Given that , 10% of A = 15% of B = 20% of C
∴ 10A = 15B = 20C
| ⇒ | = | = | ||||
| 60 | 60 | 60 |
| ⇒ | = | = | ||||
| 6 | 4 | 3 |
∴ A : B : C = 6 : 4 : 3
∴ 6k + 4k + 3k = 7800
⇒ 13 k = 7800
| ⇒ k = | = 600 | |
| 13 |
∴ B’s income = 4k = 600 × 4 = ₹ 2400
