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?
Answer: D. 3200 — Concept: Simple interest is directly proportional to time (T) when Principal (P) and Rate (R) are constant. Given: Interest for 4 years = Rs. 1280.…
- A.
3100
- B.
3230
- C.
3600
- D.
3200
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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)
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