Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 863 · 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 ₹860 to ₹774. By what percent did it come down?
2. 2.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
3. 3.A water tank holds 1760 litres. 15% of the water is used. How many litres are left?
4. 4.The price of a school bag changes from ₹800 to ₹560. By what percent did it come down?
5. 5.A water tank holds 4920 litres. 25% of the water is used. How many litres are left?
6. 6.A town has 2600 people. Its population grows by 5%. How many people live there now?
7. 7.A water tank holds 2560 litres. 15% of the water is used. How many litres are left?
8. 8.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
9. 9.A water tank holds 1540 litres. 25% of the water is used. How many litres are left?
10. 10.A shop sells 1120 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
11. 11.A water tank holds 1460 litres. 10% of the water is used. How many litres are left?
12. 12.A shop sells 3440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
13. 13.The price of a bicycle is ₹1460. It goes up by 40%. What is the new price (in ₹)?
14. 14.A water tank holds 3760 litres. 15% of the water is used. How many litres are left?
15. 15.A shop sells 3120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
16. 16.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
17. 17.The price of a school bag changes from ₹120 to ₹102. By what percent did it come down?
18. 18.A water tank holds 2660 litres. 30% of the water is used. How many litres are left?
19. 19.A town has 2560 people. Its population grows by 10%. How many people live there now?
20. 20.The price of a bicycle is ₹1480. It goes up by 50%. What is the new price (in ₹)?
21. 21.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
22. 22.A water tank holds 1040 litres. 25% of the water is used. How many litres are left?
23. 23.The price of a bicycle is ₹1640. It goes up by 30%. What is the new price (in ₹)?
24. 24.The price of a school bag changes from ₹2880 to ₹3024. By what percent did it go up?
25. 25.A town has 980 people. Its population grows by 15%. How many people live there now?
26. 26.A shop sells 1540 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
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.The price of a school bag changes from ₹1200 to ₹720. By what percent did it come down?
29. 29.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
30. 30.The price of a school bag changes from ₹3200 to ₹2560. By what percent did it come down?
31. 31.A shop sells 2820 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
32. 32.A water tank holds 3520 litres. 5% of the water is used. How many litres are left?
33. 33.A town has 1200 people. Its population grows by 5%. How many people live there now?
34. 34.The price of a bicycle is ₹540. It goes up by 40%. What is the new price (in ₹)?
35. 35.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
36. 36.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
37. 37.A water tank holds 880 litres. 20% of the water is used. How many litres are left?
38. 38.A water tank holds 1960 litres. 50% of the water is used. How many litres are left?
39. 39.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
40. 40.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =

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