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Question

Mr. Suresh's average monthly expenditure for the first four months of the year was Rs.260. For the next five months, the average monthly expenditure was Rs.40 more than what it was during the first four months. If he spent Rs.560 in all during the remaining three months of the year. Find what percentage of his annual income of Rs.5000 did he save in the year.

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Solution

Suresh's average monthly expenditure for the first four months of the year = Rs.260×4= Rs.1040

For the next five months, the average monthly expenditure was Rs.40 more than what it was during the first four months.

He spent Rs.260+40 for one month.

In 5 months he spent Rs.300×5= Rs.1500.

He spent Rs.560 in all during the remaining three months of the year.

Total expenditure = Rs.1040+ Rs.1500+ Rs.560=3100

∴ Savings =5000−3100=1900

Percentage savings =19005000×100=38%

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