The difference between simple interest on a certain sum at the annual rate of…
2021
The difference between simple interest on a certain sum at the annual rate of 11% for 8 years and 9 years is ₹132. What is the sum?
- A.
₹1450
- B.
₹1200
- C.
₹1300
- D.
₹1100
Attempted by 90 students.
Show answer & explanation
Correct answer: B
Key idea: The difference between simple interest for 9 years and 8 years equals the simple interest for 1 year.
Set up the equation: Principal × (11/100) × 1 = 132.
Solve for Principal: Principal = 132 × 100 / 11.
Compute: 132 ÷ 11 = 12, so Principal = 12 × 100 = ₹1200.
Answer: ₹1200