Question
Amit invested a total of Rs. 14,000, dividing the amount
between two schemes: one offering compound interest (compounded annually) and the other offering simple interest, both at the same rate. After 2 years, the difference between the compound interest and simple interest earned is Rs. 315. Find the annual rate of interest.Solution
C.I - S.I = P (R/100) 2
Rs. 315 = 14000 * R 2 /10000
R 2 = 3150000/14000
R 2 = 225
R = 15%
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