A man spends 80% of his income. His income increased by 25% and his expenditure increased by10%. By how much did his savings increase?

A 45%

B 55%C 85%D 75%

Let man's monthly income be Rs.100He spendsRs.80 and saves Rs.20His increased income=100+25% of 100=100+25100×100=Rs.125His increased expenditure=80+10% of 80=80+10100×80=Rs.88His new savings=125-88=Rs.37Percentage increase in his savings=37-2020×100=1720×100=85%

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