The incomes of A and B are in the ratio 11:9 and their expenditures are in the ratio 7: 3. If each saves 3000, then, A’s income can be:

400

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3600

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4400

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5000

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Solution

The correct option is C 4400
Income = 11x:9x
Expenditure = 7y:3y
$11 x - 7 y = 9 x - 3 y x = 2 y 22 y - 7 y = 3000 y = \frac{3000}{15} = 200$
x = 2 $\times$ 200 = 400
income of A is = $11 \times 400 = 4400$

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The incomes of A and B are in the ratio 11:9 and their expenditures are in the ratio 7: 3. If each saves 3000, then, A’s income can be:

The correct option is C 4400Income = 11x:9x Expenditure = 7y:3y 11x−7y=9x−3yx=2y22y−7y=3000y=300015=200 x = 2 × 200 = 400 income of A is = 11×400=4400

The correct option is C 4400
Income = 11x:9x
Expenditure = 7y:3y
$11 x - 7 y = 9 x - 3 y x = 2 y 22 y - 7 y = 3000 y = \frac{3000}{15} = 200$
x = 2 $\times$ 200 = 400
income of A is = $11 \times 400 = 4400$