Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 175 · 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 ₹42500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
2. 2.A town has 43400 people. The population grows by 10% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
4. 4.What amount will ₹26600 grow to in 1 year at 12% per year compound interest (in ₹)?
5. 5.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹39600 at 25% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹43600 at 5% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹41500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
9. 9.Find the compound interest on ₹13000 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹12200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹11500 grow to in 1 year at 20% per year compound interest (in ₹)?
12. 12.What amount will ₹28800 grow to in 2 years at 15% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
15. 15.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
16. 16.What amount will ₹14500 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.A town has 59000 people. The population grows by 10% every year. What will the population be after 3 years?
18. 18.What amount will ₹26400 grow to in 2 years at 10% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹20800 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹9200 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹46000 at 25% per year for 2 years (in ₹)?
23. 23.A town has 13100 people. The population grows by 25% every year. What will the population be after 1 year?
24. 24.Find the compound interest on ₹8900 at 20% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹58800 grow to in 1 year at 15% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹51300 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹52200 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹19000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹20100 at 20% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹54900. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹5200 at 10% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹20600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
33. 33.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.A scooter is worth ₹52400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹42400 at 10% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹31100 grow to in 1 year at 25% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹41600 at 5% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹4000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
39. 39.What amount will ₹35600 grow to in 2 years at 5% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).

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