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Example - 4. What sum of money will amount to Rs.3630 in 2 years at 10% per annum compound interest?

Solution : Here, P=? A = Rs.3630, r = 10% p.a.

t = 2 years, n = 2

A = P (1 + r/100) n

Rs.3630 = P(1 + 10/100)²

= P(110/100)²

= (121/100)P