Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 308 · 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 price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
2. 2.A water tank holds 1300 litres. 5% of the water is used. How many litres are left?
3. 3.A water tank holds 2580 litres. 30% of the water is used. How many litres are left?
4. 4.A price comes down by 30% 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 ₹1460 to ₹1168. By what percent did it come down?
6. 6.The price of a bicycle is ₹4020. It goes up by 5%. What is the new price (in ₹)?
7. 7.The price of a school bag changes from ₹4500 to ₹5400. By what percent did it go up?
8. 8.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
9. 9.A town has 1500 people. Its population grows by 15%. How many people live there now?
10. 10.The price of a school bag changes from ₹1460 to ₹1022. By what percent did it come down?
11. 11.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
12. 12.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
13. 13.The price of a bicycle is ₹1120. It goes up by 10%. What is the new price (in ₹)?
14. 14.A water tank holds 440 litres. 5% of the water is used. How many litres are left?
15. 15.The price of a school bag changes from ₹820 to ₹1066. By what percent did it go up?
16. 16.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
17. 17.A town has 940 people. Its population grows by 30%. How many people live there now?
18. 18.The price of a bicycle is ₹2820. It goes up by 15%. What is the new price (in ₹)?
19. 19.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
20. 20.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
21. 21.A town has 1360 people. Its population grows by 15%. How many people live there now?
22. 22.A shop sells 4000 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
23. 23.The price of a bicycle is ₹3560. It goes up by 25%. What is the new price (in ₹)?
24. 24.A water tank holds 4580 litres. 15% of the water is used. How many litres are left?
25. 25.A shop sells 180 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
26. 26.The price of a bicycle is ₹1580. It goes up by 20%. What is the new price (in ₹)?
27. 27.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
28. 28.A water tank holds 3540 litres. 40% of the water is used. How many litres are left?
29. 29.A water tank holds 4680 litres. 5% of the water is used. How many litres are left?
30. 30.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
31. 31.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
32. 32.The price of a bicycle is ₹4400. It goes up by 5%. What is the new price (in ₹)?
33. 33.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
34. 34.A town has 2380 people. Its population grows by 15%. How many people live there now?
35. 35.The price of a school bag changes from ₹1240 to ₹1426. By what percent did it go up?
36. 36.A water tank holds 4620 litres. 25% of the water is used. How many litres are left?
37. 37.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
38. 38.A water tank holds 4000 litres. 40% of the water is used. How many litres are left?
39. 39.The price of a school bag changes from ₹1780 to ₹1869. By what percent did it go up?
40. 40.The price of a bicycle is ₹4140. It goes up by 10%. What is the new price (in ₹)?

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