Question

The ratio of income of 2 persons is 9:7 and the ratio of their expenditure is 4:3. If each of them manages to save Rs.2000 per month, find their monthly income.

(10th class chapter Pair of linear equations in two variables).

Answer 1

let their income be 9x 7x expenditure 4y. 3y
9x-4y=7x-3y=2000 y=2x. x=2000. y=4000
their income are 18000 14000

Answer 2

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