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The salaries of P and Q together amount to ₹2,000. P spends 95% of his salary and Q spends 85% of his salary. If now their savings are the same, then P's salary is:
₹1,500
₹500
₹1,250
₹750
₹1,500
Equate savings percentages directly: 5% of P=15% of Q, which gives the ratio of salaries P:Q=3:1. Divide ₹2,000 in 3:1 to get ₹1,500.
Sum of salaries of P and Q = ₹2,000, P's expenditure = 95%, Q's expenditure = 85%, Savings of P = Savings of Q
P×(100%−95%)=Q×(100%−85%
Equate savings percentages directly: 5% of P=15% of Q, which gives the ratio of salaries P:Q=3:1. Divide ₹2,000 in 3:1 to get ₹1,500.
Equating expenditures instead of savings, or mixing up the ratio parts for P and Q.
Define Variables and Given Information
Let the salary of P be P and the salary of Q be Q. We are given that their total salary is ₹2,000.
P+Q=2000
Set Up Savings Equation
P spends 95% of his salary, so his savings are 100%−95%=5%. Q spends 85% of his salary, so his savings are 100%−85%=15%. Since their savings are equal:
5% of P=15% of Q⟹0.05P=0.15Q
Find the Ratio of Salaries
Dividing both sides by 0.05, we get the ratio of P's salary to Q's salary.
P=3Q⟹QP=13
Calculate P's Salary
Using the total salary of ₹2,000 and the ratio 3:1, P's salary is calculated as:
P’s Salary=3+13×2000=43×2000=1500
A is correct because P's calculated salary is ₹1,500.
Problems involving income, expenditure, and savings can be solved rapidly by setting up direct proportional relationships between savings percentages and total amounts.