Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 209 · 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.A water tank holds 1700 litres. 15% of the water is used. How many litres are left?
2. 2.The price of a school bag changes from ₹1800 to ₹1260. By what percent did it come down?
3. 3.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
4. 4.The price of a school bag changes from ₹2420 to ₹3388. By what percent did it go up?
5. 5.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
6. 6.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
7. 7.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
8. 8.The price of a school bag changes from ₹3380 to ₹4394. By what percent did it go up?
9. 9.The price of a bicycle is ₹3400. It goes up by 5%. What is the new price (in ₹)?
10. 10.A water tank holds 3420 litres. 40% of the water is used. How many litres are left?
11. 11.The price of a bicycle is ₹80. It goes up by 40%. What is the new price (in ₹)?
12. 12.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
13. 13.The price of a school bag changes from ₹1940 to ₹2522. By what percent did it go up?
14. 14.A water tank holds 220 litres. 10% of the water is used. How many litres are left?
15. 15.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
16. 16.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
17. 17.A town has 1780 people. Its population grows by 25%. How many people live there now?
18. 18.The price of a bicycle is ₹1760. It goes up by 30%. What is the new price (in ₹)?
19. 19.The price of a school bag changes from ₹4980 to ₹7470. By what percent did it go up?
20. 20.The price of a bicycle is ₹2200. It goes up by 20%. What is the new price (in ₹)?
21. 21.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
22. 22.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
23. 23.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
24. 24.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
25. 25.A shop sells 3800 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
26. 26.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
27. 27.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
28. 28.The price of a school bag changes from ₹160 to ₹112. By what percent did it come down?
29. 29.The price of a bicycle is ₹3360. It goes up by 25%. What is the new price (in ₹)?
30. 30.A water tank holds 1660 litres. 5% of the water is used. How many litres are left?
31. 31.A town has 220 people. Its population grows by 50%. How many people live there now?
32. 32.The price of a school bag changes from ₹2700 to ₹3780. By what percent did it go up?
33. 33.A water tank holds 3020 litres. 15% of the water is used. How many litres are left?
34. 34.A water tank holds 540 litres. 30% of the water is used. How many litres are left?
35. 35.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
36. 36.The price of a bicycle is ₹620. It goes up by 30%. What is the new price (in ₹)?
37. 37.The price of a bicycle is ₹220. It goes up by 30%. What is the new price (in ₹)?
38. 38.A town has 2740 people. Its population grows by 10%. How many people live there now?
39. 39.A water tank holds 1800 litres. 20% of the water is used. How many litres are left?
40. 40.The price of a bicycle is ₹1560. It goes up by 20%. What is the new price (in ₹)?

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