Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 934 · 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 ₹1720 to ₹2064. By what percent did it go up?
2. 2.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
3. 3.A water tank holds 4120 litres. 50% of the water is used. How many litres are left?
4. 4.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
5. 5.A water tank holds 2420 litres. 20% of the water is used. How many litres are left?
6. 6.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
7. 7.The price of a school bag changes from ₹1500 to ₹1050. By what percent did it come down?
8. 8.A water tank holds 4980 litres. 30% of the water is used. How many litres are left?
9. 9.The price of a school bag changes from ₹3440 to ₹2580. By what percent did it come down?
10. 10.The price of a bicycle is ₹4380. It goes up by 10%. What is the new price (in ₹)?
11. 11.A water tank holds 2940 litres. 5% of the water is used. How many litres are left?
12. 12.A town has 3700 people. Its population grows by 15%. How many people live there now?
13. 13.The price of a school bag changes from ₹1600 to ₹2000. By what percent did it go up?
14. 14.The price of a bicycle is ₹2800. It goes up by 5%. What is the new price (in ₹)?
15. 15.A water tank holds 4820 litres. 15% of the water is used. How many litres are left?
16. 16.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
17. 17.A water tank holds 2620 litres. 5% of the water is used. How many litres are left?
18. 18.The price of a school bag changes from ₹2180 to ₹2616. By what percent did it go up?
19. 19.A shop sells 1080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
20. 20.A water tank holds 4940 litres. 20% of the water is used. How many litres are left?
21. 21.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
22. 22.A shop sells 2400 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
23. 23.A water tank holds 4300 litres. 30% of the water is used. How many litres are left?
24. 24.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
25. 25.A water tank holds 4000 litres. 30% of the water is used. How many litres are left?
26. 26.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
27. 27.A water tank holds 700 litres. 40% of the water is used. How many litres are left?
28. 28.A water tank holds 740 litres. 20% of the water is used. How many litres are left?
29. 29.The price of a bicycle is ₹4740. It goes up by 5%. What is the new price (in ₹)?
30. 30.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
31. 31.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
32. 32.A water tank holds 720 litres. 5% of the water is used. How many litres are left?
33. 33.The price of a bicycle is ₹180. It goes up by 25%. What is the new price (in ₹)?
34. 34.The price of a school bag changes from ₹780 to ₹1092. By what percent did it go up?
35. 35.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
36. 36.A town has 1840 people. Its population grows by 10%. How many people live there now?
37. 37.A town has 3720 people. Its population grows by 20%. How many people live there now?
38. 38.The price of a school bag changes from ₹3640 to ₹2184. By what percent did it come down?
39. 39.A water tank holds 4900 litres. 20% of the water is used. How many litres are left?
40. 40.The price of a bicycle is ₹4300. It goes up by 20%. What is the new price (in ₹)?

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