Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 73 · 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.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 37200 people. The population grows by 10% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹15100 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 24100 people. The population grows by 5% every year. What will the population be after 1 year?
5. 5.What is the difference between the compound interest and the simple interest on ₹3200 at 15% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹56400 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹5800 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹47600 grow to in 2 years at 5% per year compound interest (in ₹)?
11. 11.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹55600 at 15% per year for 2 years (in ₹)?
13. 13.What amount will ₹3000 grow to in 1 year at 20% per year compound interest (in ₹)?
14. 14.What amount will ₹18100 grow to in 1 year at 10% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹34500 grow to in 1 year at 8% per year compound interest (in ₹)?
17. 17.What amount will ₹50400 grow to in 2 years at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹44700 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹29800 at 20% per year for 2 years (in ₹)?
20. 20.What amount will ₹50000 grow to in 2 years at 12% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹9200 at 15% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹35400 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹10300 at 10% per year for 2 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹36000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹24700 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹27500 grow to in 1 year at 8% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹22500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
29. 29.A scooter is worth ₹28800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
30. 30.A scooter is worth ₹33400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹47200 at 20% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹46800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
35. 35.A scooter is worth ₹12600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹50800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
39. 39.Find the compound interest on ₹24900 at 20% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹9700 grow to in 1 year at 15% per year compound interest (in ₹)?

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