Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 15 · 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 ₹8000 grow to in 2 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹47200 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
5. 5.What amount will ₹17600 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹46000 at 10% per year for 2 years (in ₹)?
7. 7.What amount will ₹12200 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹48200 grow to in 2 years at 10% per year compound interest (in ₹)?
9. 9.What amount will ₹12800 grow to in 3 years at 25% per year compound interest (in ₹)?
10. 10.A town has 15100 people. The population grows by 20% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹32800 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹51700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
13. 13.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹60000 at 10% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹28100 grow to in 2 years at 20% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹11000 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What amount will ₹13000 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹23000 at 20% per year for 3 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹59100 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.A scooter is worth ₹25000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
23. 23.What amount will ₹33000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹33600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹42900 at 8% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹43600 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹30800 at 15% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹14800 grow to in 2 years at 20% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹27500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
33. 33.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
34. 34.A scooter is worth ₹7200. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
35. 35.Find the compound interest on ₹35700 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹42500 grow to in 2 years at 4% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹57600 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹57200 at 15% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹48800 grow to in 2 years at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).

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