1. The ratio of weekly incomes of A and B is 9 : 7 and the ratio of their expenditures is 4 : 3. If each saves 200 per week, then the sum of their weekly incomes is
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By: anil on 05 May 2019 02.00 am
let the income of A and B be 9z and 7z and the expenditure be A and B 4a and 3a 9z - 4a = 200 7z - 3a = 200 solving both equations , we get z = 200 a = 400 income of A and B are 1800 and 1400 and hence sum = 3200
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