Q13 of 52 Page 112

Let us write by calculating the sum of money if the difference between compound interest and simple interest for 3 years becomes ₹930 at the rate of 10% interest per annum.

Let principal = ₹x


∴ Simple interest at 10% for 3 years



At the rate of 10% compound interest per the annum the amount for 3 years




∴ Compound interest for 3 years


By the condition,





∴ x = 30000


∴ Principal is ₹30000


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