Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 563 · 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 1420 litres. 10% of the water is used. How many litres are left?
2. 2.A water tank holds 1800 litres. 10% of the water is used. How many litres are left?
3. 3.A water tank holds 4120 litres. 25% of the water is used. How many litres are left?
4. 4.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
5. 5.A town has 3640 people. Its population grows by 25%. How many people live there now?
6. 6.The price of a school bag changes from ₹4920 to ₹4182. By what percent did it come down?
7. 7.A shop sells 4780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
8. 8.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
9. 9.A water tank holds 1880 litres. 10% of the water is used. How many litres are left?
10. 10.The price of a school bag changes from ₹4460 to ₹5352. By what percent did it go up?
11. 11.The price of a school bag changes from ₹4580 to ₹5954. By what percent did it go up?
12. 12.The price of a bicycle is ₹540. It goes up by 15%. What is the new price (in ₹)?
13. 13.The price of a bicycle is ₹1280. It goes up by 5%. What is the new price (in ₹)?
14. 14.A water tank holds 760 litres. 25% of the water is used. How many litres are left?
15. 15.A shop sells 1700 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
16. 16.The price of a school bag changes from ₹3080 to ₹4620. By what percent did it go up?
17. 17.A water tank holds 420 litres. 5% of the water is used. How many litres are left?
18. 18.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
19. 19.A water tank holds 2660 litres. 10% of the water is used. How many litres are left?
20. 20.The price of a bicycle is ₹3180. It goes up by 25%. What is the new price (in ₹)?
21. 21.A water tank holds 2060 litres. 15% of the water is used. How many litres are left?
22. 22.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
23. 23.A water tank holds 3240 litres. 10% of the water is used. How many litres are left?
24. 24.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
25. 25.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
26. 26.A water tank holds 2620 litres. 5% of the water is used. How many litres are left?
27. 27.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
28. 28.A water tank holds 640 litres. 10% of the water is used. How many litres are left?
29. 29.A shop sells 2760 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
30. 30.A water tank holds 3900 litres. 5% of the water is used. How many litres are left?
31. 31.A shop sells 2620 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
32. 32.The price of a bicycle is ₹420. It goes up by 15%. What is the new price (in ₹)?
33. 33.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
34. 34.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
35. 35.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
36. 36.The price of a school bag changes from ₹1240 to ₹1116. By what percent did it come down?
37. 37.The price of a bicycle is ₹3800. It goes up by 25%. What is the new price (in ₹)?
38. 38.A shop sells 700 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
39. 39.The price of a bicycle is ₹2600. It goes up by 5%. What is the new price (in ₹)?
40. 40.A water tank holds 1200 litres. 50% of the water is used. How many litres are left?

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