Practice Simple and compound interest Questions and Answers

• 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...
• Alisha had Rs. 7500 with her. She invested 20% of the sum at 7% p.a. and the rest at 13% p.a., both at simple interest for 6 years each. Find the total int...
• Vikram had Rs. 9500 with him. He invested 35% of the sum at 11% p.a. and the rest at 16% p.a., both at simple interest for 4 years each. Find the total int...
• ‘When Rs. (a + 800) is invested at 30% p.a. simple interest for 5 years it gives an interest of Rs. (4a + 900). Find the value of ‘a’.
• ‘P’ invested Rs. 5000 for (y + 3) months, while ‘Q’ invested Rs. 1500 more than ‘P’ for (y - 1) months, in a business. If profit received by �...
• ‘M’ invested Rs. 3600 for (t + 6) months, while ‘N’ invested Rs. 900 more than ‘M’ for (t - 1) months, in a business. If profit received by ‘...
• A man invested Rs. 10,000 at simple interest of 15% p.a. If he had instead invested the same sum on compound interest of 15% p.a., compounded annually, the...
• A man invested Rs. 20,000 at simple interest of 10% p.a. If he had instead invested the same sum on compound interest of 10% p.a., compounded annually, the...
• A man invested Rs. 25,000 at simple interest of 12% p.a. If he had instead invested the same sum on compound interest of 12% p.a., compounded annually, the...
• A man invested Rs. 30,000 at simple interest of 8% p.a. If he had instead invested the same sum on compound interest of 8% p.a., compounded annually, then ...
• ‘M’, ‘N’ and ‘O’, each of them invested Rs. 3500 at the rate of 12% p.a., 30% p.a. and 45% p.a., respectively for 7 years, 4 years and 5 years,...
• ‘P’, ‘Q’ and ‘R’, each of them invested Rs. 2000 at the rate of 16% p.a., 24% p.a. and 36% p.a., respectively for 8 years, 3 years and 6 years,...
• Meera had Rs. 3500 with her. She invested Rs. ‘c’ at 14% p.a. simple interest for 6 years and the remaining sum at 20% p.a. compound interest, compound...
• Rs. 25,000 invested at simple interest of 6% p.a. yields the same interest after 2 years as Rs. 40,000 when invested at simple interest of 'y%' p.a. yields...
• Rs. 15,000 invested at simple interest of 7% p.a. yields the same interest after 4 years as Rs. 25,000 when invested at simple interest of 'y%' p.a. yields...
• Rs. 30,000 invested at simple interest of 8% p.a. yields the same interest after 3 years as Rs. 45,000 when invested at simple interest of 'y%' p.a. yields...
• A certain sum is invested at a simple interest rate of 10% per annum for a certain period. If the sum becomes five times the principal at the end of the pe...
• Find the total amount received on investing Rs. 12,000 for 2 years at compound interest of 10% p.a., compounded annually.
•  If the simple interest for 5 years is equal to 20% of the principal, then the interest will be equal to the principal after ________ years.
• What is the simple interest on a sum of Rs. 10,000 at a rate of 5% per annum for 3 years.
• Rs. 'x' is invested in scheme 'A' offering simple interest such that interest earned after 5 years is Rs. 600. If the amount received is further invested i...
• The difference between the interest received on a certain sum at the rate of 35% p.a. and 30% p.a. respectively at simple interest for two years is Rs. 700...
• The difference between the interest received on a certain sum at the rate of 24% p.a. and 20% p.a. respectively at simple interest for two years is Rs. 400...
• A person lent Rs. 40000 at 8% p.a. compound interest, compounded annually for two years. After two years, the total amount earned by the person is again le...
• A woman lent Rs. 29500 at 13% p.a. compound interest, compounded annually for two years. After two years, the total amount earned by the woman is again len...
• A man invested Rs. 'A' at simple interest of 10% and Rs. 'A + 3000' at simple interest of 8% p.a., for 6 years each. If the interest earned from both inves...
• A man invested Rs. 'B' at simple interest of 18% and Rs. 'B + 4000' at simple interest of 14% p.a., for 4 years each. If the interest earned from both inve...
• A man invested Rs. 'C' at simple interest of 20% and Rs. 'C + 2000' at simple interest of 16% p.a., for 3 years each. If the interest earned from both inve...
• A man invested Rs. 'D' at simple interest of 22% and Rs. 'D + 5000' at simple interest of 18% p.a., for 2 years each. If the interest earned from both inve...
• A man invested Rs. 'r' in scheme 'E' offering simple interest at 14% for 6 years and Rs. 3,000 in scheme 'F' offering simple interest at 10% for 3 years. I...
• A man invested Rs. 's' in scheme 'G' offering simple interest at 8% for 5 years and Rs. 2,200 in scheme 'H' offering simple interest at 9% for 4 years. If ...
• A man invested Rs. 't' in scheme 'I' offering simple interest at 11% for 7 years and Rs. 2,700 in scheme 'J' offering simple interest at 13% for 6 years. I...
• Vaishali invested Rs. (X + 3000) on compound interest of r% p.a. compounded annually for 2 years and Tanushi invested Rs. (X – 2000) on simple interest o...
• Sameer invested Rs. (R + 1000) at simple interest of 20% p.a. for 3 years. Ajeet invested Rs. (R - 4000) at compound interest of 20% p.a. for 3 years. If t...
• "R" made certain investments with a 40% annual compound interest rate that is compounded quarterly. If, 9 months later, he receives Rs. 1,99,650, then the ...
• An equal sum of money is invested in two schemes which offer interest at the same rate but one at simple interest and the other at compound interest (compo...
• An equal sum of money is invested in two schemes which offer interest at the same rate but one at simple interest and the other at compound interest (compo...
• An equal sum of money is invested in two schemes which offer interest at the same rate but one at simple interest and the other at compound interest (compo...