Question : Raj's income is Rs. 45,000 and his expenditure is Rs. 33,000. If his income is increased by 20% and expenditure by 12%, then what will be the percentage increase in savings?
Option 1: 48%
Option 2: 56%
Option 3: 36%
Option 4: 42%
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Correct Answer: 42%
Solution : Given: Income = Rs. 45000 Expenditure = Rs. 33000 So, savings = (45000 – 33000) = Rs. 12000 After a 20% increase in income, the net income = $(45000+45000×\frac{20}{100})$ = $54000$ After a 12% increase in expenditure, the new expenditure = $(33000+33000×\frac{12}{100})$ = $36960$ Now, the savings = (54000 – 36960) = Rs. 17040 So, increase percentage in savings = $(\frac{17040-12000}{12000})×100=42$% Hence, the correct answer is 42%.
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