Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 626 · 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 ₹50000 at 12% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹55200 at 25% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 43100 people. The population grows by 20% every year. What will the population be after 1 year?
4. 4.Find the compound interest on ₹36000 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
6. 6.What amount will ₹4600 grow to in 1 year at 4% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹39800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
8. 8.What amount will ₹14000 grow to in 1 year at 8% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹20000 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹3300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.A town has 9900 people. The population grows by 25% every year. What will the population be after 1 year?
13. 13.A town has 5200 people. The population grows by 5% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹52000 at 8% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹14000 at 15% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹4800 at 5% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹34000 at 25% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹8700 at 20% per year for 2 years (in ₹)?
20. 20.What amount will ₹55400 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
22. 22.A scooter is worth ₹24700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹34400 at 5% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
25. 25.A scooter is worth ₹5000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹38500 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹23700 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.A scooter is worth ₹52500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹18900 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
31. 31.Find the compound interest on ₹29200 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹38100 at 10% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹11000 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹39000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹58400 at 15% per year for 2 years, compounded every year (in ₹).
38. 38.A town has 45100 people. The population grows by 4% every year. What will the population be after 1 year?
39. 39.What is the difference between the compound interest and the simple interest on ₹16800 at 25% per year for 2 years (in ₹)?
40. 40.What amount will ₹42900 grow to in 1 year at 25% per year compound interest (in ₹)?

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