Practice Simple and compound interest Questions and Answers

• Soham invested Rs. 32,000 partly in schemes ‘I’ and ‘J’ for 4 years and 6 years, respectively. Scheme ‘I’ offers simple interest at 18% per ann...
• Mr. Karan invested his funds in 3 different projects 'P', 'Q', and 'R' in the ratio 7:6:5, respectively. The rates of interest offered by projects 'P', 'Q'...
• Ms. Riya allocated her savings into three different funds X, Y, and Z in the ratio 8:7:6. The interest rates for these funds are w% p.a., (w − 4)% p.a., ...
• A sum of money invested at 18% per annum simple interest for 3 years earns Rs. 540 more interest than it does when invested at 15% per annum compound inter...
• Rama and Dipak each invested a sum of ₹8000 for a period of two years at 15% compound interest per annum. However, while for Rama the interest was compou...
• Raj invested Rs. ‘5y’ in scheme ‘C’ offering simple interest of 20% p.a. and reinvested the interest earned from scheme ‘C’ at the end of 3 yea...
• If the difference between the simple interest and compound interest, compounded annually, on Rs. 40,000 at (r + 4)% rate of interest for 2 years is Rs. 256...
• By investing Rs. 6,000 for 'a' years at an annual compound interest rate of 15%, the interest gained amounted to Rs. 1,935. Determine the simple interest e...
• Ashish invests an amount of Rs. 'A' into two different SIPs, named 'P' and 'Q', for durations of 3 years and 2 years respectively. The first SIP 'P' yields...
• A total amount of Rs.39,800 is split among three siblings named 'Ajay', 'Bijay', and 'Chetna'. 'Ajay' receives an amount that is in the ratio of 7:8 compar...
• Ankush puts Rs. 8,000 into two separate Systematic Investment Plans (SIPs) at a compound interest rate of 20% per annum. In SIP 'X', the investment is for ...
• A woman invests Rs. 10,000 in a bank offering 10% p.a. compound interest for the first 3 years and then 15% p.a. simple interest for the rest of the period...
• A sum of Rs. 30,000 is invested in SIP 'C' which offers 12% p.a. simple interest for 3 years. The interest received from SIP 'C' is invested in SIP 'D' whi...
• A sum of Rs. 40,000 is invested in SIP 'E' which offers 8% p.a. simple interest for 6 years. The interest received from SIP 'E' is invested in SIP 'F' whic...
• A sum of Rs. 15,000 is invested in SIP 'J' which offers 6% p.a. simple interest for 8 years. The interest received from SIP 'J' is invested in SIP 'K' whic...
• An amount of Rs. 2400 is placed in SIP 'P' at a 25% per annum simple interest rate for 8 years, and Rs. 2500 is invested in SIP 'Q' with a 20% annual compo...
• 'X' invested Rs. 18,000, splitting the amount between two SIPs: 'P' offering 8% per annum simple interest and 'Q' offering 10% per annum compound interest,...
• Amit placed an amount 'p' in Fund 'X' that offers a 10% compound interest per annum and also invested Rs. (p + 1000) in Fund 'Y' that offers a 15% simple i...
• Rina lent Rs. 18,000 to her brother at a compound interest rate of 'y%' per annum, compounded annually. After one year, her brother paid her Rs. 19,440 to ...
• Priya lent Rs. 10,000 to her colleague at a compound interest rate of 'a%' per annum, compounded annually. A year later, the colleague paid back Rs. 10,800...
• Kiran lent Rs. 40,000 to a friend at a compound interest rate of 'b%' per annum, compounded annually. After one year, the friend returned Rs. 44,800. If Ki...
• A woman invested Rs. 'x + 500' at 8% per annum simple interest and received Rs.360 as interest after 3 years. Calculate the interest she would earn if she ...
• 'P' invests a certain amount at an annual compound interest rate of 15% for two years, earning Rs. 3870 in interest. He then reinvests the total sum she re...
• At the rate of any compound interest rate, it gets tripled in 4 years, in how many years it will become 729 times its own?
• The difference between earned interest on the same amount invested for 2 years on compound interest and simple interest is Rs. 75. If interest rates are 5%...
• Ankit invested a total of Rs. 63,000 between two SIPs: 'P', offering 10% compound interest compounded annually, and 'Q', offering 12% simple interest per a...
• An amount doubles itself on simple interest in 3 years. What is the percent per annum rate of interest?
• If ₹5,000 is invested at an annual interest rate of 8% compounded quarterly, at what time will it grow to ₹5,202?
• Rohit invested Rs. 3000 in scheme 'C' for 4 years and Rs. 4500 in scheme 'D' for 3 years. If the simple interest rate for both schemes is 15% per annum, ca...
• Maya invested Rs. 5000 in scheme 'E' for 2 years and Rs. 6000 in scheme 'F' for 5 years. Both schemes offer a simple interest rate of 10% per annum. Find t...
• Rs. (4x + 200) is invested at a simple interest rate of 18% per annum, earning an interest of Rs. 2160 after 4 years. Calculate the interest earned when Rs...
• Invest Rs. (3x + 150) at 12% per annum to earn Rs. 1080 after 3 years. Find the interest earned when Rs. (2x - 50) is invested at the same interest rate fo...
• A sum of Rs. (5x + 500) at 15% per annum earns Rs. 4500 over 6 years. Find the interest earned when Rs. (7x + 200) is invested at the same rate for the sam...
• Rs. (2x + 400) is invested at a rate of 20% per annum, yielding an interest of Rs. 3200 after 4 years. Calculate the interest earned when Rs. (x + 100) is ...
• Divide Rs 2500 into two parts such that the interest on one part at 12% for 2 years equals the interest on the other part at 6% for 4 years. Find the two p...
• A person borrowed Rs. 50,000 at a rate of 12% per annum for one year. He then lent it out as two separate loans to D and E. He lent Rs. 20,000 to D at 20% ...
• A woman borrows Rs. 80,000 from a bank at 8% per annum. She invests Rs. 30,000 of it in a business at 12% per annum and the rest at 10% per annum. Calculat...
• Rohan had Rs. 5000 with him. He invested 40% of the sum at 10% p.a. and the rest at 15% p.a., both at simple interest for 3 years each. Find the total inte...
• Maya had Rs. 12000 with her. She invested 30% of the sum at 8% p.a. and the rest at 18% p.a., both at simple interest for 5 years each. Find the total inte...
• Karan had Rs. 10000 with him. He invested 50% of the sum at 9% p.a. and the rest at 12% p.a., both at simple interest for 2 years each. Find the total inte...