1.

Monthly incomes of A and B are in the ratio 2:3 and their monthly expenditures are in the ratio 3:5. If each saves Rs. 100 per month, find the monthly incomes of A and B.

Answer»

Let the monthly incomes be 2x and 3x respectively. Since their savings are Rs. 100 each their expenditure would be 2x – 100 and 3x – 100

∴ \(\frac{2x - 100}{3x - 100} = \frac{3}{5}\)

10x – 500 = 9x – 300; x = Rs. 200 

Hence the monthly income of A = 200 × 2 = Rs. 400 

The monthly income of B = 200 × 3 = Rs. 600



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