Mathematics · Simple Interest
A certain amount triples in 20 years under simple interest at r% per annum. If Rs. 15,000 is invested at (r + 2)% simple interest per annum, find the interest earned after 4 years.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Rs. 8,000
- 2Rs. 7,600
- 3Rs. 7,200✓
- 4Rs. 6,400
Correct answer
Rs. 7,200
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