Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 314 · 40 questions

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

1. 1.The price of a school bag changes from ₹4440 to ₹4218. By what percent did it come down?
2. 2.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
3. 3.A shop sells 2200 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
4. 4.A water tank holds 3620 litres. 50% of the water is used. How many litres are left?
5. 5.A town has 3080 people. Its population grows by 40%. How many people live there now?
6. 6.A town has 2100 people. Its population grows by 30%. How many people live there now?
7. 7.A water tank holds 2420 litres. 5% of the water is used. How many litres are left?
8. 8.A water tank holds 2160 litres. 20% of the water is used. How many litres are left?
9. 9.A town has 100 people. Its population grows by 10%. How many people live there now?
10. 10.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
11. 11.The price of a school bag changes from ₹4720 to ₹5192. By what percent did it go up?
12. 12.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
13. 13.The price of a school bag changes from ₹4120 to ₹5150. By what percent did it go up?
14. 14.A town has 100 people. Its population grows by 15%. How many people live there now?
15. 15.A water tank holds 120 litres. 15% of the water is used. How many litres are left?
16. 16.A water tank holds 2180 litres. 20% of the water is used. How many litres are left?
17. 17.A water tank holds 1520 litres. 10% of the water is used. How many litres are left?
18. 18.The price of a school bag changes from ₹840 to ₹798. By what percent did it come down?
19. 19.A water tank holds 4380 litres. 10% of the water is used. How many litres are left?
20. 20.A town has 3640 people. Its population grows by 25%. How many people live there now?
21. 21.A water tank holds 520 litres. 20% of the water is used. How many litres are left?
22. 22.The price of a bicycle is ₹2020. It goes up by 5%. What is the new price (in ₹)?
23. 23.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
24. 24.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
25. 25.The price of a bicycle is ₹4760. It goes up by 30%. What is the new price (in ₹)?
26. 26.The price of a bicycle is ₹2020. It goes up by 40%. What is the new price (in ₹)?
27. 27.The price of a bicycle is ₹100. It goes up by 10%. What is the new price (in ₹)?
28. 28.A water tank holds 3140 litres. 25% of the water is used. How many litres are left?
29. 29.A water tank holds 1960 litres. 20% of the water is used. How many litres are left?
30. 30.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
31. 31.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
32. 32.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
33. 33.A water tank holds 1180 litres. 25% of the water is used. How many litres are left?
34. 34.A town has 1440 people. Its population grows by 20%. How many people live there now?
35. 35.The price of a school bag changes from ₹4640 to ₹6496. By what percent did it go up?
36. 36.The price of a bicycle is ₹2600. It goes up by 5%. What is the new price (in ₹)?
37. 37.The price of a bicycle is ₹1140. It goes up by 15%. What is the new price (in ₹)?
38. 38.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
39. 39.A town has 200 people. Its population grows by 40%. How many people live there now?
40. 40.A water tank holds 3360 litres. 40% of the water is used. How many litres are left?

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