income to saving ratio of a person 9:2 his montly income is Rs9000 .whait is his expenditure per month.
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Answer:7000
Step-by-step explanation:
Let expenditure is x.
Then saving is 9000-x.
According to question
=> 9000 : 9000-x = 9 : 2
=> 9000 × 2 = (9000-x) ×9
=> 18000 = 81000 - 9x
=> 9x =81000-18000
=> x = 63000÷9
=> x=7000
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