Question

# What sum will amount to Rs. 6,593.40 in 2 years at C.I., if the rates are 10 percent for the successive years?

Solution

## Let principal (p) = Rs.100For 1$$^{st}$$ yearP = Rs.100R = 10%T = 1 yearI $$= \dfrac{100 \times 10 \times 1}{100} =$$ 10A = 100 + 10 = Rs.110For 2$$^{nd}$$ yearP = Rs.110R = 11%T = 1 yearI $$= \dfrac{110 \times 11 \times 1}{100} =$$ 12A = 110 + 12.10 = Rs.122.10If Amount is Rs.122.10 on a sum of Rs.=100If amount is Rs.1, sum = $$\dfrac{100}{122.10}$$If amount is Rs.6593.40, sum = $$\dfrac{100}{122.10} \times 6593.40$$= Rs.5400Mathematics

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