Multiple choice

A principal at 12.5% rate of interest compounded annually becomes 13122 Rs at the end of 4 years. Find the principal. 12.5% वार्षिक चक्रवृद्धि ब्याज दर पर एक धन 4 वर्ष के अंत में 13122 रूपये हो जाता हैं। मूलधन ज्ञात कीजिये ।

  1. Rs./रु.8200

  2. Rs./रु.8435

  3. Rs./रु.8192

  4. Rs./रु.7862
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Use CI formula: A = P(1 + r/100)^n. 13122 = P(1 + 12.5/100)^4. 1.125^4 = (9/8)^4 = 6561/4096 = 1.602. Therefore P = 13122/1.602 = 8192. Checking backward: 8192 × 1.125^4 = 8192 × 1.602 = 13122.

Keep practicing — related questions