Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 171 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
2. 2.A town has 34100 people. The population grows by 15% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹19000 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹14600 at 10% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹51100 at 10% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹3700 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹10100 at 20% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 21400 people. The population grows by 4% every year. What will the population be after 1 year?
10. 10.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
11. 11.A town has 27200 people. The population grows by 15% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹51500 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹30400 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
15. 15.A town has 15400 people. The population grows by 8% every year. What will the population be after 1 year?
16. 16.A scooter is worth ₹13500. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
17. 17.What amount will ₹26400 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹55500 at 20% per year for 3 years, compounded every year (in ₹).
19. 19.A town has 2300 people. The population grows by 20% every year. What will the population be after 1 year?
20. 20.A town has 16000 people. The population grows by 15% every year. What will the population be after 1 year?
21. 21.A scooter is worth ₹18400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
22. 22.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹12900 at 8% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹15500 at 10% per year for 2 years (in ₹)?
25. 25.What amount will ₹38400 grow to in 3 years at 25% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹34000 at 15% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹40800 at 25% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹32300 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹42100 grow to in 2 years at 10% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹52000 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 6400 people. The population grows by 25% every year. What will the population be after 3 years?
33. 33.What amount will ₹24900 grow to in 1 year at 12% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹50400 at 10% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹58800 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹10200 grow to in 1 year at 15% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹58400 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹41600 at 25% per year for 2 years (in ₹)?
40. 40.What amount will ₹53300 grow to in 1 year at 15% per year compound interest (in ₹)?

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