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The S.I. on a Sum of money will be Rs.600 after 10 years. If the Principal is tripled after 5 years, what will be the total interest at the end of 10th year?

Question

The S.I. on a Sum of money will be Rs.600 after 10 years. If the Principal is tripled after 5 years, what will be the total interest at the end of 10th year?

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Solution

To solve this problem, we need to understand the concept of Simple Interest (S.I.). The formula for Simple Interest is I = PRT/100, where P is the principal amount, R is the rate of interest, and T is the time in years.

Given in the problem, the S.I. on a sum of money will be Rs.600 after 10 years. This means that the interest for the first 5 years is Rs.300 (since the interest is the same for each year).

Now, the principal is tripled after 5 years. So, the interest for the next 5 years will be 3 times the interest of the first 5 years, which is 3*300 = Rs.900.

Therefore, the total interest at the end of the 10th year will be the sum of the interest for the first 5 years and the interest for the next 5 years, which is 300 + 900 = Rs.1200.

This problem has been solved

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