The simple interest received on a certain sum is Rs. 1280 for 4 years. What…
2021
The simple interest received on a certain sum is Rs. 1280 for 4 years. What will be the simple interest on the same at the same rate of interest for 10 years?
- A.
3100
- B.
3230
- C.
3600
- D.
3200
Attempted by 44 students.
Show answer & explanation
Correct answer: D
Concept: Simple interest is directly proportional to time (T) when Principal (P) and Rate (R) are constant.
Given: Interest for 4 years = Rs. 1280.
Proportionality: Interest for 1 year = 1280 / 4 = Rs. 320.
Calculation: Interest for 10 years = Interest for 1 year × 10.
Result: 320 × 10 = Rs. 3200.
Final Answer: Option 4 (3200)