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Question

Mohan spent 25% of his monthly earning on magazines. Out of the remaining amount amount he spent 75% on the hostel and college fees. If he had Rs. 120 at the end of the month, find how much money he has received from his father in that month?

A
Rs. 1000
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B
Rs. 1260
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C
Rs. 640
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D
Rs. 850
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Solution

The correct option is C Rs. 640
Let the monthly income be =x
Expenditure on magazine =25x=14x
So balance amount =xx4=34x
And hostel and college expense =34x×75100=9x16
So balance amount he had =34x9x16
12x9x163x16
As per the problem =3x16=240
or 3x=120×16 or x=120×163=Rs.640

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