Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 540 · 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 ₹6900 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.A town has 28600 people. The population grows by 20% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹56000 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹38000 grow to in 3 years at 10% per year compound interest (in ₹)?
5. 5.A town has 43300 people. The population grows by 20% every year. What will the population be after 1 year?
6. 6.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹6700 at 10% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹57200 at 5% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 59600 people. The population grows by 5% every year. What will the population be after 2 years?
11. 11.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹12500 at 20% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹55200 at 5% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹31200 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹14400 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹54100 at 8% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹43600 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹6000 at 15% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹56600 at 8% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹18800 at 25% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹14600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹20700 at 10% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹4700 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹5600 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.A town has 7300 people. The population grows by 8% every year. What will the population be after 1 year?
30. 30.What is the difference between the compound interest and the simple interest on ₹5300 at 10% per year for 2 years (in ₹)?
31. 31.A town has 31700 people. The population grows by 20% every year. What will the population be after 2 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹17600 at 5% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹2000 grow to in 3 years at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹16000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹44900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹22400 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹53500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
40. 40.A town has 29200 people. The population grows by 20% every year. What will the population be after 1 year?

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