Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 133 · 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 amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
2. 2.What amount will ₹44000 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹16600 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.A town has 25600 people. The population grows by 15% every year. What will the population be after 2 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹42800 at 15% per year for 2 years (in ₹)?
6. 6.A town has 43600 people. The population grows by 10% every year. What will the population be after 2 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹19600 at 15% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹51800 at 10% per year for 2 years (in ₹)?
10. 10.A scooter is worth ₹34800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹37200 grow to in 2 years at 15% per year compound interest (in ₹)?
12. 12.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
13. 13.What amount will ₹3100 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹20300 at 20% per year for 2 years (in ₹)?
16. 16.What amount will ₹59200 grow to in 2 years at 25% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹17600 at 12% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹52600 at 15% per year for 1 year, compounded every year (in ₹).
19. 19.A town has 46400 people. The population grows by 15% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹53200 at 25% per year for 2 years (in ₹)?
21. 21.What amount will ₹24600 grow to in 1 year at 4% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹25600 at 15% per year for 2 years (in ₹)?
23. 23.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹32800 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹19200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹29800 at 10% per year for 2 years (in ₹)?
29. 29.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹59000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹16400 at 15% per year for 2 years (in ₹)?
33. 33.A town has 5000 people. The population grows by 12% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹40000 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.A scooter is worth ₹7600. Its value falls by 5% 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 ₹33400 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹27100 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹43200 at 20% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹28400 at 10% per year for 2 years, compounded every year (in ₹).

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