Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 198 · 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 ₹4000 at 15% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹19000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹19200 at 25% per year for 2 years (in ₹)?
7. 7.A town has 54600 people. The population grows by 4% every year. What will the population be after 1 year?
8. 8.A town has 26400 people. The population grows by 5% every year. What will the population be after 2 years?
9. 9.Find the compound interest on ₹7600 at 12% per year for 1 year, compounded every year (in ₹).
10. 10.A scooter is worth ₹12000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹10200 grow to in 1 year at 4% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹44000 at 25% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹2800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
16. 16.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
17. 17.A town has 10800 people. The population grows by 8% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹39500 at 20% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹27500 at 20% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 9100 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.A town has 36000 people. The population grows by 10% every year. What will the population be after 3 years?
23. 23.What amount will ₹5000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹6900 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹30700 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹46100 at 10% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹38900 at 20% per year for 2 years (in ₹)?
29. 29.A town has 35000 people. The population grows by 10% every year. What will the population be after 2 years?
30. 30.Find the compound interest on ₹8800 at 15% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹54800 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹48200 at 20% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹32900 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹26800 at 20% per year for 2 years (in ₹)?
36. 36.What amount will ₹48000 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹25000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹31500 grow to in 2 years at 10% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹24900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
40. 40.What amount will ₹46000 grow to in 3 years at 20% per year compound interest (in ₹)?

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