Calculate time for an amount INR 450 to generate an interest of INR 81 as the…

Calculate time for an amount INR 450 to generate an interest of INR 81 as the interest at the rate of 4.5% per annum simple interest.

Answer: A. 4 — Key formula: Simple Interest = (Principal × Rate × Time) / 100 Substitute the given values: Principal = 450, Rate = 4.5%, Simple Interest = 81. Set up the…

  1. A.

    4

  2. B.

    5

  3. C.

    11

  4. D.

    6

Attempted by 2 students.

Show answer & explanation

Correct answer: A

Key formula: Simple Interest = (Principal × Rate × Time) / 100

  1. Substitute the given values: Principal = 450, Rate = 4.5%, Simple Interest = 81.

  2. Set up the equation: 81 = (450 × 4.5 × Time) / 100.

  3. Compute 450 × 4.5 = 2025, so the equation becomes 2025 × Time / 100 = 81.

  4. Multiply both sides by 100: 2025 × Time = 8100.

  5. Solve for Time: Time = 8100 / 2025 = 4 years.

Answer: 4 years.

Explore the full course: Isro

Loading lesson…