A certain sum, at compound interest, becomes ₹ 7,396 in 2 years and ₹ 7,950.70 in 3 years. Find the rate of interest.

The value of a car is depreciating at 5% per year and is ₹ 3,15,875 after 2 years. What was its original price ?

A man invests ₹ 7,000 for three years, at a certain rate of interest, compounded annually. At the end of one year it amounts to ₹ 7,980.

Calculate :

(i) the rate of interest per annum.

(ii) the interest accrued in the second year.

(iii) the amount at the end of the third year.

₹ 8,000 were invested at 5% per annum C.I compounded annually. Find :

(i) the amount at the end of the second year.

(ii) the interest for the third year.