Multiple choice

In what time will Rs. 800 amount to Rs. 1152 at 20% per annum compound interest, if the interest is compounded annually? रू. 800 की राशि कितने समय में 20% प्रति वर्ष चक्रवृद्धि ब्याज पर रू. 1152 हो जायेगी, जबकि ब्याज वार्षिक संयोजित होता हो?

  1. 3 years / वर्ष

  2. 2 years/ वर्ष

  3. 5 years / वर्ष

  4. 4 years/ वर्ष
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using compound interest formula A = P(1+r/100)^n: 1152 = 800(1.2)^n. This gives 1.44 = (1.2)^n, which means n=2 since 1.2²=1.44. Other options don't satisfy the equation.

Keep practicing — related questions