Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 432 · 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 town has 38000 people. The population grows by 10% every year. What will the population be after 3 years?
2. 2.Find the compound interest on ₹9400 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹42000 at 15% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹41200 at 25% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹21200 at 15% per year for 2 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹4400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹14000 at 8% per year for 1 year, compounded every year (in ₹).
8. 8.A town has 42500 people. The population grows by 8% every year. What will the population be after 2 years?
9. 9.A scooter is worth ₹48000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
12. 12.A scooter is worth ₹58800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
13. 13.What amount will ₹28400 grow to in 1 year at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹39500 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
16. 16.A town has 42800 people. The population grows by 15% every year. What will the population be after 1 year?
17. 17.What is the difference between the compound interest and the simple interest on ₹50000 at 25% per year for 2 years (in ₹)?
18. 18.A town has 44200 people. The population grows by 12% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
21. 21.What amount will ₹10900 grow to in 2 years at 20% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
23. 23.What amount will ₹17300 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.A town has 14200 people. The population grows by 4% every year. What will the population be after 1 year?
26. 26.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
27. 27.What amount will ₹42200 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹17600 at 5% per year for 2 years (in ₹)?
29. 29.What amount will ₹8400 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.What amount will ₹59400 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
32. 32.A town has 17500 people. The population grows by 12% every year. What will the population be after 2 years?
33. 33.What amount will ₹15800 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹13000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.What amount will ₹32700 grow to in 1 year at 20% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹57000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹49000 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹13200 grow to in 2 years at 5% per year compound interest (in ₹)?

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