Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 126 · 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.A town has 47500 people. The population grows by 4% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹48900 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹42400 at 15% per year for 2 years (in ₹)?
5. 5.What amount will ₹30400 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹23900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹49600 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹39800 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.A scooter is worth ₹5200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹47500 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.A town has 39900 people. The population grows by 15% every year. What will the population be after 1 year?
14. 14.What amount will ₹59300 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹5100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹57300 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.What amount will ₹40000 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.A town has 17600 people. The population grows by 5% every year. What will the population be after 2 years?
19. 19.Find the compound interest on ₹36000 at 4% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹23500 at 15% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹3000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹42800 at 25% per year for 2 years (in ₹)?
25. 25.A town has 23000 people. The population grows by 25% every year. What will the population be after 1 year?
26. 26.A town has 41200 people. The population grows by 5% every year. What will the population be after 2 years?
27. 27.A scooter is worth ₹17600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹4800 at 5% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹54700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹36800 at 20% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹14700 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹55200 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.What amount will ₹42700 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹21200 at 25% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹36800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
36. 36.Find the compound interest on ₹54900 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹15500 grow to in 1 year at 10% per year compound interest (in ₹)?
38. 38.What amount will ₹40900 grow to in 1 year at 8% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹43000 at 10% per year for 3 years, compounded every year (in ₹).

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