1. The ratio of monthly incomes of A, B is 6 : 5 and their monthly expenditures are in the ratio 4 : 3. If each of them saves Rs. 400 per month, find the sum of their monthly incomes.
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By: anil on 05 May 2019 01.55 am
ratio of incomes = 6 : 5 ratio of expenditures = 4 : 3 If each of them saves Rs. 400 per month,
6x-4y = 400 5x-3y = 400 on solving these two equations, x = 200, y = 200 sum of thier incomes = 6x + 5x = 11x = 11(200) = 2200/- so the answer is option C.
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6x-4y = 400 5x-3y = 400 on solving these two equations, x = 200, y = 200 sum of thier incomes = 6x + 5x = 11x = 11(200) = 2200/- so the answer is option C.