Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 321 · 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 bicycle is ₹640. It goes up by 40%. What is the new price (in ₹)?
2. 2.A water tank holds 1060 litres. 5% of the water is used. How many litres are left?
3. 3.The price of a bicycle is ₹3640. It goes up by 25%. What is the new price (in ₹)?
4. 4.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
5. 5.The price of a school bag changes from ₹1400 to ₹1260. By what percent did it come down?
6. 6.A water tank holds 3820 litres. 5% of the water is used. How many litres are left?
7. 7.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
8. 8.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
9. 9.The price of a school bag changes from ₹1760 to ₹2288. By what percent did it go up?
10. 10.The price of a bicycle is ₹1320. It goes up by 50%. What is the new price (in ₹)?
11. 11.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
12. 12.The price of a bicycle is ₹580. It goes up by 5%. What is the new price (in ₹)?
13. 13.A water tank holds 1760 litres. 25% of the water is used. How many litres are left?
14. 14.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
15. 15.A town has 2360 people. Its population grows by 40%. How many people live there now?
16. 16.The price of a school bag changes from ₹4120 to ₹6180. By what percent did it go up?
17. 17.A water tank holds 440 litres. 25% of the water is used. How many litres are left?
18. 18.A town has 3440 people. Its population grows by 30%. How many people live there now?
19. 19.A water tank holds 2280 litres. 10% of the water is used. How many litres are left?
20. 20.The price of a school bag changes from ₹3780 to ₹3969. By what percent did it go up?
21. 21.A water tank holds 3840 litres. 50% of the water is used. How many litres are left?
22. 22.The price of a bicycle is ₹1340. It goes up by 25%. What is the new price (in ₹)?
23. 23.The price of a bicycle is ₹520. It goes up by 10%. What is the new price (in ₹)?
24. 24.A town has 1880 people. Its population grows by 30%. How many people live there now?
25. 25.A shop sells 1920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
26. 26.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
27. 27.The price of a school bag changes from ₹620 to ₹372. By what percent did it come down?
28. 28.The price of a bicycle is ₹1680. It goes up by 5%. What is the new price (in ₹)?
29. 29.The price of a school bag changes from ₹680 to ₹408. By what percent did it come down?
30. 30.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
31. 31.The price of a school bag changes from ₹1800 to ₹1980. By what percent did it go up?
32. 32.A shop sells 2620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
33. 33.The price of a school bag changes from ₹4640 to ₹3944. By what percent did it come down?
34. 34.The price of a bicycle is ₹400. It goes up by 5%. What is the new price (in ₹)?
35. 35.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
36. 36.A water tank holds 4860 litres. 5% of the water is used. How many litres are left?
37. 37.A town has 2800 people. Its population grows by 50%. How many people live there now?
38. 38.A water tank holds 2760 litres. 10% of the water is used. How many litres are left?
39. 39.A water tank holds 4360 litres. 15% of the water is used. How many litres are left?
40. 40.A water tank holds 660 litres. 20% of the water is used. How many litres are left?

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