Verified by Ajay Kumar
The monthly income of Suresh is ₹18,000, and his monthly expenditure is ₹12,000. Next year, his income increases by 20% and his expenditure increases by 15%. Find the percentage increase in his savings.
15%
25%
30%
40%
Answer: C
Solution: Initial savings \(=18000-12000=6000\). New income \(=18000\times1.20=21600\). New expenditure \(=12000\times1.15=13800\). New savings \(=21600-13800=7800\). Percentage increase \(=\frac{7800-6000}{6000}\times100=30\%\). Trick: Calculate the increase in savings over the original savings, not over the income.
सुरेश की मासिक आय ₹18,000 है और उसका मासिक व्यय ₹12,000 है। अगले वर्ष उसकी आय में 20% और व्यय में 15% की वृद्धि होती है। उसकी बचत में प्रतिशत वृद्धि ज्ञात कीजिए।
15%
25%
30%
40%
उत्तर: C
हल: प्रारंभिक बचत \(=18000-12000=6000\)। नई आय \(=18000\times1.20=21600\)। नया व्यय \(=12000\times1.15=13800\)। नई बचत \(=21600-13800=7800\)। बचत में प्रतिशत वृद्धि \(=\frac{7800-6000}{6000}\times100=30\%\)। ट्रिक: बचत में हुई वृद्धि की तुलना प्रारंभिक बचत से करें, कुल आय से नहीं।
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