Question
Out of her monthly income of Rs. 25,000, Priya spent (Q
- 10)% on rent, (Q + 15)% on others and saved Rs. 4,500. Find Q% of her monthly income.Solution
ATQ, Priya's total income is Rs. 25,000, and she saves Rs. 4,500. So, she spends Rs.25,000−4,500=20,500. She spends (Q−10)% on rent and (Q+15)% on other expenses, totaling Rs. 20,500. The equation is = (Q−10)% × 25,000 + (Q+15)% × 25,000 = 20,500 Simplifying gives: 500Q+1250=20,500 Solving for Q: 500Q = 19,250 
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