Question
A man invested a sum of money at compound interest. It
amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.Solution
R% = (2662 - 2420)/2420 x 100 = 242/2420 x 100 = 10% 2 years CI % = 10 + 10 + 100/100 = 21% So, 121% = 2420 100% = 2000
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