Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 389 · 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 33300 people. The population grows by 5% every year. What will the population be after 1 year?
2. 2.A scooter is worth ₹5000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹38900 at 10% per year for 2 years (in ₹)?
4. 4.What amount will ₹58000 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹11300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
6. 6.A scooter is worth ₹56800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
9. 9.Find the compound interest on ₹39400 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 38500 people. The population grows by 20% every year. What will the population be after 3 years?
11. 11.A scooter is worth ₹2000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
12. 12.What amount will ₹36000 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹49700 at 20% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.A town has 40400 people. The population grows by 25% every year. What will the population be after 2 years?
16. 16.What amount will ₹38000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹59200 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹29200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
19. 19.Find the compound interest on ₹2400 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹57600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
22. 22.Find the compound interest on ₹4400 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
24. 24.What amount will ₹20500 grow to in 3 years at 20% per year compound interest (in ₹)?
25. 25.A town has 49400 people. The population grows by 12% every year. What will the population be after 1 year?
26. 26.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹59600 at 25% per year for 2 years, compounded every year (in ₹).
28. 28.A town has 34800 people. The population grows by 25% every year. What will the population be after 2 years?
29. 29.What amount will ₹2900 grow to in 1 year at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹48800 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹15500 at 20% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹58900 grow to in 1 year at 8% per year compound interest (in ₹)?
35. 35.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹25300 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.A scooter is worth ₹59600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
38. 38.What amount will ₹10000 grow to in 2 years at 10% per year compound interest (in ₹)?
39. 39.What amount will ₹37200 grow to in 2 years at 5% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?

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