Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 221 · 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 58200 people. The population grows by 10% every year. What will the population be after 2 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹11200 at 5% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹60000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
4. 4.What amount will ₹36400 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹45200 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.A town has 38400 people. The population grows by 5% every year. What will the population be after 2 years?
7. 7.A scooter is worth ₹15600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
8. 8.A town has 51600 people. The population grows by 12% every year. What will the population be after 1 year?
9. 9.What amount will ₹55200 grow to in 2 years at 5% per year compound interest (in ₹)?
10. 10.What amount will ₹18400 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
12. 12.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 21200 people. The population grows by 5% every year. What will the population be after 2 years?
15. 15.A town has 32500 people. The population grows by 8% every year. What will the population be after 2 years?
16. 16.What amount will ₹29900 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹41300 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.A scooter is worth ₹52800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹44400 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹37800 at 20% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹45200 at 25% per year for 2 years (in ₹)?
23. 23.What amount will ₹55600 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.A town has 11200 people. The population grows by 5% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹39800 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹41200 at 25% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹24600 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.What amount will ₹19000 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹48100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
31. 31.What amount will ₹32000 grow to in 1 year at 5% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹24500 at 5% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹34000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹53900 grow to in 1 year at 15% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹37500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
37. 37.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
38. 38.A scooter is worth ₹51800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
39. 39.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
40. 40.Find the compound interest on ₹5100 at 25% per year for 1 year, compounded every year (in ₹).

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