Question
Raj's monthly income is ₹50,000. He spends 40% of his income on household expenses and saves the remaining amount. If his income increases by 10%, and his expenditure on household expenses remains the same percentage of his income, calculate the amount (in ₹) he saves after the increment.
Asked in RRB Group D · 2025
Income and Expenditure · Quantitative Aptitude
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An x% decrease in expenditure gives New Expenditure = Old Expenditure × (1−x/100).
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Percentage has appeared in 137 previous-year exam questions, most frequently in UPSC, State PSC and SSC.
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