Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 350 · 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 ₹42000 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
3. 3.A town has 48700 people. The population grows by 10% every year. What will the population be after 1 year?
4. 4.A scooter is worth ₹41200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
5. 5.A scooter is worth ₹52600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹41000 at 10% per year for 2 years (in ₹)?
7. 7.A town has 13600 people. The population grows by 25% every year. What will the population be after 2 years?
8. 8.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 41500 people. The population grows by 10% every year. What will the population be after 1 year?
10. 10.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹8400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
13. 13.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
14. 14.A town has 52800 people. The population grows by 20% every year. What will the population be after 1 year?
15. 15.Find the compound interest on ₹50400 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹20600 grow to in 1 year at 25% per year compound interest (in ₹)?
18. 18.What amount will ₹42000 grow to in 2 years at 5% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
20. 20.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
21. 21.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹40000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹8600 at 10% per year for 2 years (in ₹)?
24. 24.A town has 27500 people. The population grows by 4% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹32900 at 20% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹34400 at 10% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹39300 at 25% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
30. 30.What is the difference between the compound interest and the simple interest on ₹48400 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹3900 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.What amount will ₹32400 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
36. 36.Find the compound interest on ₹35300 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹6300 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹26000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹27000 grow to in 3 years at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?

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