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Chintu's pocket money is Rs. 120. He sav...

Chintu's pocket money is Rs. 120. He saves one third of his expenditure. Find his savings.

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The correct Answer is:
₹ 30
Let the expenditure of Chintue be Rs. X
Saving of Chintu `=(1)/(3)xxx=(x)/(3)`
Chintu's pocket money `x+(x)/(3)`
`x+(x)/(3)=120rArr(3x+x)/(2)=120`
`(4x)/(3)=120`
`4x=200xx3`
`x=(120xx3)/(4)`
`x=30xx3rArr=90`
`:.` Saving of Chintu `=(1)/(3)x=(90)/(3)=Rs. 30`
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