Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 427 · 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 ₹29200 at 25% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹33200 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹16500 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
5. 5.What amount will ₹54800 grow to in 2 years at 5% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹10400 at 5% per year for 2 years (in ₹)?
7. 7.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
8. 8.What amount will ₹48200 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
10. 10.A town has 27200 people. The population grows by 5% every year. What will the population be after 2 years?
11. 11.A town has 26800 people. The population grows by 25% every year. What will the population be after 2 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
13. 13.A town has 58900 people. The population grows by 10% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹48100 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹3700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹47600 grow to in 2 years at 5% per year compound interest (in ₹)?
17. 17.A town has 34000 people. The population grows by 10% every year. What will the population be after 2 years?
18. 18.A town has 19000 people. The population grows by 10% every year. What will the population be after 3 years?
19. 19.What amount will ₹58200 grow to in 1 year at 4% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹33900 at 20% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹8400 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹25500 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹56800 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹13000 at 20% per year for 2 years (in ₹)?
26. 26.A town has 48300 people. The population grows by 8% every year. What will the population be after 1 year?
27. 27.A town has 57100 people. The population grows by 4% every year. What will the population be after 1 year?
28. 28.A town has 55100 people. The population grows by 25% every year. What will the population be after 1 year?
29. 29.What amount will ₹40300 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹37200 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹15600 at 5% per year for 2 years (in ₹)?
32. 32.A town has 8100 people. The population grows by 15% every year. What will the population be after 1 year?
33. 33.What is the difference between the compound interest and the simple interest on ₹53800 at 20% per year for 2 years (in ₹)?
34. 34.What amount will ₹4000 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹43600 at 20% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
39. 39.What amount will ₹16100 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹20400 at 15% per year for 2 years (in ₹)?

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