The ratio of income of two persons is 9:7 and the ratio of their expenditure is 4:3 . Of each of them manage to save Rs 2000 per month, find the monthly income.
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income is 5372
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let Rs x and Rs y be the incomes of the two persons
we have,
x/y = 9/7
=> x = 9y/7 --- (1)
by question,
(x-2000)/(y-2000) = 4/3
=> 3x - 6000 = 4y - 8000
=> 3(9y/7) - 4y = -8000 + 6000
=> 27y/7 - 4y = -2000
=> -y/7 = -2000
=> -y = -14000
=> y = 14000
putting y = 14000 in (1)
=> x = (9×14000)/7
=> x = 126000/7
=> x = 18000
therefore their incomes are Rs 14000 and Rs 18000
we have,
x/y = 9/7
=> x = 9y/7 --- (1)
by question,
(x-2000)/(y-2000) = 4/3
=> 3x - 6000 = 4y - 8000
=> 3(9y/7) - 4y = -8000 + 6000
=> 27y/7 - 4y = -2000
=> -y/7 = -2000
=> -y = -14000
=> y = 14000
putting y = 14000 in (1)
=> x = (9×14000)/7
=> x = 126000/7
=> x = 18000
therefore their incomes are Rs 14000 and Rs 18000
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