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.
A
₹6000
B
₹7200
C
₹8400
D
₹9000
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Correct Answer ₹7200
Explanation
Income 5x, 6x. Exp 3y, 4y. 5x - 3y = 1800 and 6x - 4y = 1600. Solving these: x = 1200. B's income = 6 * 1200 = ₹7200.