Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 991 · 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 ₹10000 at 5% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹53200 at 25% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹28400 at 15% per year for 2 years (in ₹)?
4. 4.A town has 37500 people. The population grows by 4% every year. What will the population be after 2 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹33200 at 15% per year for 2 years (in ₹)?
6. 6.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.What amount will ₹32400 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹30000 at 25% per year for 2 years (in ₹)?
10. 10.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.What amount will ₹11300 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
13. 13.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹4900 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹20100 at 4% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 6800 people. The population grows by 25% every year. What will the population be after 2 years?
17. 17.A town has 40000 people. The population grows by 10% every year. What will the population be after 2 years?
18. 18.Find the compound interest on ₹55000 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹18200 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.A scooter is worth ₹7500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
21. 21.Find the compound interest on ₹37200 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹54500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
23. 23.What amount will ₹3600 grow to in 2 years at 15% per year compound interest (in ₹)?
24. 24.A town has 27500 people. The population grows by 12% 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 ₹58500 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹2700 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹57100 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 ₹37900 at 20% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹29000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
30. 30.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
31. 31.A town has 15800 people. The population grows by 4% every year. What will the population be after 1 year?
32. 32.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹46600. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹19000 at 4% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹22300 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹38700 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹37600 at 10% per year for 2 years, compounded every year (in ₹).

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