Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 609 · 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 ₹45600 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹27400 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹12500 grow to in 3 years at 20% per year compound interest (in ₹)?
5. 5.What amount will ₹9400 grow to in 1 year at 20% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹16100 at 12% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
9. 9.A town has 54800 people. The population grows by 5% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹42500 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹53700 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.What amount will ₹18000 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
16. 16.A scooter is worth ₹19000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹59500 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
19. 19.A town has 53800 people. The population grows by 10% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹35400 at 10% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹23100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
22. 22.A scooter is worth ₹50200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
23. 23.A scooter is worth ₹23500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
24. 24.A scooter is worth ₹4800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹3400 at 20% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹45600 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹40700 at 20% per year for 2 years (in ₹)?
28. 28.What amount will ₹24500 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹29100 at 20% per year for 2 years (in ₹)?
30. 30.A town has 45200 people. The population grows by 4% every year. What will the population be after 1 year?
31. 31.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
32. 32.What amount will ₹21400 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹16800 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹30400 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹13600 at 25% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹19200 at 15% per year for 2 years (in ₹)?
39. 39.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
40. 40.A town has 10000 people. The population grows by 4% every year. What will the population be after 2 years?

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