Question
Monthly savings of ‘A’ is Rs. 1500 more than his
monthly expenditure and his total monthly income is Rs. 4100. If his monthly income is increased by 40% and his monthly savings is increased by 37.5%, then find the increase in his monthly expenditureSolution
Monthly savings of ‘A’ = (4100 + 1500)/2 = Rs. 2800 Monthly expenditure of ‘A’ = 4100 – 2800 = Rs. 1300 Increased monthly expenditure of ‘A’ = 1.40 × 4100 – 1.375 × 2800 = Rs. 1890 Desired increase = 1890 – 1300 = Rs. 590
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