Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 114 · 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.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.What amount will ₹20000 grow to in 3 years at 10% per year compound interest (in ₹)?
4. 4.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹14000 at 20% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
7. 7.A town has 18600 people. The population grows by 10% every year. What will the population be after 1 year?
8. 8.What amount will ₹25400 grow to in 1 year at 10% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
11. 11.A town has 40000 people. The population grows by 8% every year. What will the population be after 2 years?
12. 12.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.What amount will ₹28800 grow to in 3 years at 25% per year compound interest (in ₹)?
14. 14.A town has 49000 people. The population grows by 10% every year. What will the population be after 3 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹48400 at 15% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
18. 18.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹59200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
20. 20.What amount will ₹17300 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.What amount will ₹13700 grow to in 1 year at 4% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹38500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
23. 23.What amount will ₹3700 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹4300 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹41500 at 20% per year for 3 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹38400. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹15200 grow to in 1 year at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹39100 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹21300 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹24800 grow to in 2 years at 20% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹25500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
34. 34.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹39600 at 25% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹4600. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹43100 at 15% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹45100 at 8% per year for 1 year, compounded every year (in ₹).

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