Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 783 · 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 ₹60000 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
3. 3.A town has 18500 people. The population grows by 5% every year. What will the population be after 1 year?
4. 4.A scooter is worth ₹17500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
5. 5.What amount will ₹16500 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹57200 at 5% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹51100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.A town has 20400 people. The population grows by 25% every year. What will the population be after 2 years?
10. 10.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹39500 at 10% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹41300 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹43200 at 5% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹43900 at 10% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹40500 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.What amount will ₹26500 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹21200 at 15% per year for 2 years (in ₹)?
21. 21.What amount will ₹52300 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 ₹51200 at 5% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹38400 at 15% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹37200 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹57000 grow to in 3 years at 10% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹37600 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹5800 at 20% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹2900 at 10% per year for 2 years (in ₹)?
29. 29.What amount will ₹4800 grow to in 2 years at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹58000 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹58200 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.A town has 52900 people. The population grows by 4% every year. What will the population be after 1 year?
33. 33.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
35. 35.What amount will ₹50800 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹43600 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹12500 grow to in 3 years at 20% per year compound interest (in ₹)?
38. 38.What amount will ₹37300 grow to in 2 years at 10% per year compound interest (in ₹)?
39. 39.What amount will ₹43400 grow to in 1 year at 12% 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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