Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 552 · 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 59900 people. The population grows by 20% every year. What will the population be after 1 year?
2. 2.A town has 53600 people. The population grows by 12% every year. What will the population be after 1 year?
3. 3.A scooter is worth ₹17600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹14900 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹26400 at 25% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.What amount will ₹24600 grow to in 1 year at 10% per year compound interest (in ₹)?
8. 8.What amount will ₹41200 grow to in 1 year at 25% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹39400 at 20% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹21700 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹9600 grow to in 3 years at 25% per year compound interest (in ₹)?
14. 14.A town has 30700 people. The population grows by 4% every year. What will the population be after 1 year?
15. 15.A town has 57600 people. The population grows by 20% every year. What will the population be after 1 year?
16. 16.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹56400 at 15% per year for 2 years (in ₹)?
18. 18.A town has 5900 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.A town has 35000 people. The population grows by 8% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹58800 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹6000 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹4400 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹26100. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
25. 25.What amount will ₹9800 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹27200 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹14200 grow to in 1 year at 12% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹19000 at 20% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹43200 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹23100 at 4% per year for 1 year, compounded every year (in ₹).
34. 34.A scooter is worth ₹5000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹13200 at 25% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹48200 at 10% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹34800 at 25% per year for 2 years (in ₹)?
38. 38.A town has 10000 people. The population grows by 25% every year. What will the population be after 2 years?
39. 39.What amount will ₹5000 grow to in 1 year at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹43600 at 5% per year for 2 years (in ₹)?

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