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5.What sum of money at compound interest will amount to Rs. 2249.52 in 3 years, if the rate of
interest is 3% for the first year, 4% for the second year and 5% for the third year ?
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5.What sum of money at compound interest will amount to Rs. 2249.52 in...
Calculation of Compound Interest

To calculate the compound interest on a sum of money, we need to know the principal amount, interest rate, and the number of years for which the interest is being calculated. The formula for calculating compound interest is:

A = P(1 + r/n)^(n*t)

Where:

A = final amount after the specified time

P = principal amount

r = annual interest rate

n = number of times the interest is compounded per year

t = time period in years

Calculation of Interest for Three Years

Given that the interest rate is 3% for the first year, 4% for the second year, and 5% for the third year, we need to calculate the interest for each year separately.

Let the principal amount be P.

Interest for the first year = P * 3/100

Amount after the first year = P + P * 3/100 = P(1 + 0.03)

Interest for the second year = P(1 + 0.03) * 4/100

Amount after the second year = P(1 + 0.03) + P(1 + 0.03) * 4/100 = P(1 + 0.03)(1 + 0.04)

Interest for the third year = P(1 + 0.03)(1 + 0.04) * 5/100

Amount after the third year = P(1 + 0.03)(1 + 0.04) + P(1 + 0.03)(1 + 0.04) * 5/100 = P(1 + 0.03)(1 + 0.04)(1 + 0.05)

Therefore, the final amount after three years can be calculated as:

A = P(1 + 0.03)(1 + 0.04)(1 + 0.05) = Rs. 2249.52

Calculation of Principal Amount

We can use the above formula to calculate the principal amount.

2249.52 = P(1 + 0.03)(1 + 0.04)(1 + 0.05)

2249.52/P = (1 + 0.03)(1 + 0.04)(1 + 0.05)

2249.52/P = 1.125115

P = 2249.52/1.125115 = Rs. 2000

Therefore, the principal amount is Rs. 2000.
Community Answer
5.What sum of money at compound interest will amount to Rs. 2249.52 in...
Let x be the principal. by sloving we get x*103/100*104/100*105/100=2249.52. x= 2249520000/1124760 x= 2000
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5.What sum of money at compound interest will amount to Rs. 2249.52 in 3 years, if the rate ofinterest is 3% for the first year, 4% for the second year and 5% for the third year ?
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