Basic Computer Knowledge Test Questions and Answers

Compound Interest : Aptitude Test (65 Questions with Explanation)

1.

What would be the compound interest on Rs.7700/- at 15 ¼% per annum for 2 years compounded annually

   A.) Rs.2725.75/-
   B.) Rs.2527.57/-
   C.) Rs.2227.57/-
   D.) Rs.2520.57/-

Answer: Option 'B'

Principal = Rs. 7700/- 
time = 2 years 
rate = 15 ¼% 
Amount = P(1+R/100)n 
= 7700 × (1 + 61/(4 × 100)2) 
= 7700 × [(1 + 61/400)2] 
= 7700 × [(461/400)2)] 
= 7700 × 461/400 × 461/400 
= 7700 × 1.1525 × 1.1525 
= 7700 × 1.32825625 
= 10227.573125 
C.I = 10227.573125 - 7700 = 2527.57/-

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