Selina solutions concise maths class 9 icse Solutions for Chapter 2 chapter 2 compound interest without using formula

₹ 16,000 is invested at 5% compound interest compounded per annum.

Use the table, given below, to find the amount in 4 years.

Calculate the amount and the compound interest on:

(i) ₹4,600 in 2 years when the rates of interest of successive years are 10% and 12% respectively.

(ii) ₹16,000 in 3 years when the rates of interest of successive years are 10%, 14% and 15% respectively.

borrowed ₹ 2,500 from B at 12% per annum compound interest. After 2 years, A gave ₹ 2,936 and a watch to B to clear the account. Find the cost of the watch.

How much will ₹ 50,000 amount to in 3 years compounded yearly, if the rates for the successive years are 6%,8% and 10% respectively.

Find the compound interest on ₹ 4,000 accrued in three years, when the rate of interest is 8%for the first year and 10% per year for second and third year.

Calculate the difference between the simple interest and the compound interest on ₹ 4,000 in 2 years at 8% per annum compounded yearly.

A man lends ₹ 12,500 at 12% for the first year, at 15% for the second year and at 18% for the third year. If the rates of interest are compounded yearly; find the difference between C.I of the first year and the compound interest for the third year.

A man borrows Rs 6,000 at 5 percent C.I. per annum. If he repays Rs 1,200 at the end of each year, find the amount of the loan outstanding at the beginning of the third year.

A manufacturer estimates that his machine depreciates by 15% of its value at the beginning of the year, Find the original value (cost) of the machine, if it depreciates by Rs.5,355 during second year.

A sum is invested at compound interest compounded yearly. If the interest for two successive years be Rs. 5,700 and Rs. 7,410, calculate the rate of interest.

A certain sum amounts to Rs.5,292 in two years and Rs. 5,556.60 in three years, interest being compounded annually. Find:

(i) The rate of interest

(ii) The original sum.

The compound interest, calculated yearly, on a certain sum of money for the second year is Rs. 1089 and for the third year it is Rs.1,197.90.

Calculate the rate of interest and the sum of money.

Ramesh invests Rs.12,800 for three years at the rate of 10% per annum compound interest. Find:

(i) The sum due to Ramesh at the end of the year.

(ii) The interest he earns for the second year.

(iii) The total amount due to him at the end of the third year.

Find the sum, invested at 10% compounded annually, on which the interest for the third year exceeds the interest of the first year by Rs.252.

A man borrows Rs.10,000 at 10% compound interest compounded yearly.

At the end of each year, he pays back 30% of the sum borrowed. How much money is left unpaid just after the second year?

During every financial year, the value of a machine depreciates by 12%.

Find the original cost of a machine which depreciates by Rs. 2,640 during the second financial year of its purchase.

Find the sum on which the difference between the simple interest and the compound interest at the rate of 8% per annum compounded annually be Rs.64 in 2 years.

Saurabh invests Rs.48000 for 7 years at 10% per annum compound interest. After a year, he paid back Rs. 4,000. If compound interest for the second year be Rs.920, find:

(i) The rate of interest charged.

(ii) The amount of debt at the end of the second year.