Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 62 · 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 scooter is worth ₹9300. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
2. 2.A scooter is worth ₹9300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹42600. Its value falls by 20% 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 ₹30000 at 12% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹39200 at 25% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹45200 at 25% per year for 2 years (in ₹)?
8. 8.A town has 9500 people. The population grows by 20% every year. What will the population be after 3 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹5200 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹48600 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹25600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹17000 at 20% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹52400 at 15% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹11900 at 20% per year for 2 years (in ₹)?
17. 17.A town has 30800 people. The population grows by 5% every year. What will the population be after 2 years?
18. 18.A town has 24000 people. The population grows by 15% every year. What will the population be after 2 years?
19. 19.What amount will ₹37600 grow to in 2 years at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹60000 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
23. 23.What amount will ₹27700 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
26. 26.What amount will ₹58000 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹28500 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.A town has 2300 people. The population grows by 8% every year. What will the population be after 1 year?
30. 30.A scooter is worth ₹42000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
31. 31.Find the compound interest on ₹4000 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹10700 at 5% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹5000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹16800 at 5% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹38000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹23900 at 20% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹18000 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹16400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
39. 39.What amount will ₹28700 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?

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