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A and B have monthly incomes in the ratio 5 : 6 and monthly expenditures in the ratio 3 : 4. If they save ₹ 1800 and ₹ 1600 respectively, find the monthly income of B :
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- ₹ 3400
- ₹ 2700
- ₹ 1720
- ₹ 7200
Correct Option: D
Given
| = | ||
| Monthly income of B | 6 |
∴ Monthly income of A = 5x
and that of B = 6x (x is a constant)
According to the question
| = | ||
| 6x − 1600 | 4 |
20x – 7200 = 18x – 4800
2x = 2400
∴ x = 1200
∴ Monthly income of B
= 1200 × 6 = ₹ 7200
