Multiple choice

A sum of Rs. 22500 deposited at compound interest becomes double after 5 years. After 20 years it will become- 22500 रू. की धनराशि चक्रवृद्धि ब्याज पर निवेश की जाती है तो 5 वर्ष में दोगुनी हो जाती है। 20 वर्षों बाद यह हो जायेगी-

  1. Rs. 320000

  2. Rs. 340000

  3. Rs. 360000

  4. Rs. 380000
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If money doubles in 5 years at compound interest, then in 20 years (which is 4 periods of 5 years), it will become 2^4 = 16 times the principal. Principal = Rs. 22500. Amount after 20 years = 22500 × 16 = Rs. 360000. This is because compound interest grows exponentially.

Keep practicing — related questions