Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 821 · 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 ₹15200 at 25% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹40400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹16400 at 25% per year for 2 years (in ₹)?
6. 6.A town has 15000 people. The population grows by 8% every year. What will the population be after 2 years?
7. 7.A scooter is worth ₹16200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
8. 8.A town has 34000 people. The population grows by 5% every year. What will the population be after 2 years?
9. 9.What amount will ₹35400 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹36000 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹46600 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
13. 13.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹59200 at 15% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹41100 at 20% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹50700 at 20% per year for 2 years (in ₹)?
17. 17.What amount will ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹28100 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹16700 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹42100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
23. 23.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 22800 people. The population grows by 5% every year. What will the population be after 2 years?
25. 25.What amount will ₹57300 grow to in 1 year at 15% per year compound interest (in ₹)?
26. 26.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹26800 at 25% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹20500 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.A town has 25500 people. The population grows by 20% every year. What will the population be after 1 year?
31. 31.What amount will ₹55000 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
34. 34.A town has 59200 people. The population grows by 5% every year. What will the population be after 1 year?
35. 35.What amount will ₹22800 grow to in 2 years at 25% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
37. 37.What amount will ₹20000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.What amount will ₹32800 grow to in 1 year at 15% per year compound interest (in ₹)?
39. 39.What amount will ₹45500 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.What amount will ₹34000 grow to in 2 years at 5% per year compound interest (in ₹)?

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