Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 217 · 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 460 litres. 5% of the water is used. How many litres are left?
2. 2.A shop sells 820 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
3. 3.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
4. 4.A town has 1260 people. Its population grows by 5%. How many people live there now?
5. 5.The price of a school bag changes from ₹1380 to ₹1035. By what percent did it come down?
6. 6.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
7. 7.A water tank holds 300 litres. 25% of the water is used. How many litres are left?
8. 8.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
9. 9.The price of a bicycle is ₹4660. It goes up by 20%. What is the new price (in ₹)?
10. 10.A water tank holds 1260 litres. 40% of the water is used. How many litres are left?
11. 11.A town has 300 people. Its population grows by 20%. How many people live there now?
12. 12.A water tank holds 3640 litres. 15% of the water is used. How many litres are left?
13. 13.A water tank holds 220 litres. 10% of the water is used. How many litres are left?
14. 14.A water tank holds 660 litres. 50% of the water is used. How many litres are left?
15. 15.The price of a bicycle is ₹1520. It goes up by 15%. What is the new price (in ₹)?
16. 16.A shop sells 3040 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
17. 17.A water tank holds 2180 litres. 25% of the water is used. How many litres are left?
18. 18.The price of a bicycle is ₹220. It goes up by 50%. What is the new price (in ₹)?
19. 19.A water tank holds 1380 litres. 40% of the water is used. How many litres are left?
20. 20.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
21. 21.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
22. 22.The price of a school bag changes from ₹4680 to ₹2340. By what percent did it come down?
23. 23.The price of a bicycle is ₹2000. It goes up by 40%. What is the new price (in ₹)?
24. 24.A water tank holds 2700 litres. 10% of the water is used. How many litres are left?
25. 25.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
26. 26.A water tank holds 920 litres. 50% of the water is used. How many litres are left?
27. 27.The price of a bicycle is ₹3620. It goes up by 40%. What is the new price (in ₹)?
28. 28.The price of a school bag changes from ₹1400 to ₹2100. By what percent did it go up?
29. 29.The price of a school bag changes from ₹4380 to ₹5256. By what percent did it go up?
30. 30.The price of a bicycle is ₹100. It goes up by 40%. What is the new price (in ₹)?
31. 31.The price of a school bag changes from ₹300 to ₹420. By what percent did it go up?
32. 32.A town has 3420 people. Its population grows by 40%. How many people live there now?
33. 33.The price of a school bag changes from ₹1380 to ₹1242. By what percent did it come down?
34. 34.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
35. 35.A shop sells 640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
36. 36.A water tank holds 360 litres. 15% of the water is used. How many litres are left?
37. 37.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
38. 38.A water tank holds 3960 litres. 30% of the water is used. How many litres are left?
39. 39.The price of a bicycle is ₹3800. It goes up by 5%. What is the new price (in ₹)?
40. 40.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =

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