a man spends 75 of his income his increases by 20..., Percentage, General Mathematics

Question:A man spends `75%` of his income. His income increases by `20%` and he increased his expenditure by `15%`. His savings are then increased by

A `33%` 
B `33 1/3%` 
C `35%` 
D `40%`

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+ AnswerC

+ ExplanationLet income be `Rs. 100`.

Then, expenditure `= Rs. 75`,

saving `= Rs. 25`

New income `= Rs. 120`

New expenditure `= Rs = ((115)/(100) xx 75)`

`= Rs (345)/4`

Now, saving`= Rs = (120 - (345)/4)`

`= Rs (135)/4`

Increase`%` in saving `= ((35)/(4 xx 25) xx 100)`

`= 35%`.

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