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Question

The monthly income of A and B are in the ratio 3:4 and their monthly expenditures are in the ratio 7:11. If each saves Rs. 2500 per month, find the monthly income of each.

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Solution

Let the monthly income of A = Rs 3xthen the monthly income of B = Rs 4xNow, savings of A =Rs 2500Savings of B = Rs 2500Now, expenditure of A = Rs3x-2500Expenditure of B = Rs4x-2500Now, according to question, 3x-25004x-2500 = 71133x - 27500 = 28x - 1750033x - 28x = 27500 - 175005x = 10000x = 2000So, monthly income of A = Rs 3x = Rs 3×2000 = Rs 6000monthly income of B = Rs 4x = Rs 4×2000 = Rs 8000

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