Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 174 · 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 ₹14000 at 15% per year for 2 years (in ₹)?
2. 2.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹40400 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹20800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
5. 5.A town has 49600 people. The population grows by 15% every year. What will the population be after 2 years?
6. 6.What amount will ₹28000 grow to in 2 years at 25% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹25400 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹6700 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹18100 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What amount will ₹35000 grow to in 2 years at 10% per year compound interest (in ₹)?
13. 13.A town has 11000 people. The population grows by 10% every year. What will the population be after 3 years?
14. 14.Find the compound interest on ₹14000 at 25% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹19300 at 20% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹42000 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹25600 at 5% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹15600. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
21. 21.What amount will ₹4800 grow to in 1 year at 8% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹31600 at 5% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹59900 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹34400 at 5% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹35000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹51200 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹50000 at 10% per year for 3 years, compounded every year (in ₹).
30. 30.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
31. 31.A town has 14000 people. The population grows by 10% every year. What will the population be after 1 year?
32. 32.Find the compound interest on ₹51100 at 20% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹41200 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹37500 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹42000 at 20% per year for 2 years (in ₹)?
37. 37.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹53600 at 5% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹39000 at 5% per year for 1 year, compounded every year (in ₹).

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