Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 897 · 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 amount will ₹46100 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹21200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
3. 3.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.What amount will ₹44000 grow to in 3 years at 10% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹24800 at 5% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹60000 at 4% per year for 2 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹50000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹3900 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹10200 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹22500 grow to in 2 years at 10% per year compound interest (in ₹)?
11. 11.What amount will ₹8000 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.What amount will ₹33000 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹40100 at 20% per year for 2 years (in ₹)?
15. 15.What amount will ₹40800 grow to in 2 years at 25% per year compound interest (in ₹)?
16. 16.A town has 59200 people. The population grows by 15% every year. What will the population be after 2 years?
17. 17.A town has 52000 people. The population grows by 10% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹28000 at 25% per year for 2 years (in ₹)?
19. 19.What amount will ₹26500 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.What amount will ₹17600 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹37900 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹15100 grow to in 2 years at 10% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹42900 at 4% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹47200 at 5% per year for 2 years (in ₹)?
25. 25.What amount will ₹7300 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.What amount will ₹48600 grow to in 1 year at 25% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.What amount will ₹27200 grow to in 2 years at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹37900 grow to in 1 year at 4% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹45000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.A town has 36500 people. The population grows by 20% every year. What will the population be after 2 years?
34. 34.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.A town has 17100 people. The population grows by 20% every year. What will the population be after 1 year?
36. 36.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
37. 37.A town has 11600 people. The population grows by 5% every year. What will the population be after 1 year?
38. 38.What amount will ₹55500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹36100 grow to in 1 year at 25% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?

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