Multiple choice

There is 80% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 18000 after 3 years at the same rate? 8 वर्ष में एक राशि में 80% साधारण ब्याज पर वृद्धि हुई है । उसी दर पर 3 वर्ष के बाद 18000 रुपये का चक्रवृद्धि ब्याज क्या होगा ?

  1. 5800

  2. 3780

  3. 6018

  4. 5958
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

First find rate: 80% increase in 8 years means SI = 80% of P, so 80 = (R × 8), giving R = 10%. Now calculate CI: Amount = 18000(1 + 10/100)^3 = 18000(1.1)^3 = 18000(1.331) = Rs. 23958. CI = 23958 - 18000 = Rs. 5958. This matches option D.

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