Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 589 · 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 4820 litres. 50% of the water is used. How many litres are left?
2. 2.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
3. 3.A water tank holds 2440 litres. 5% of the water is used. How many litres are left?
4. 4.The price of a school bag changes from ₹3980 to ₹4577. By what percent did it go up?
5. 5.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
6. 6.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
7. 7.A water tank holds 4580 litres. 25% of the water is used. How many litres are left?
8. 8.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
9. 9.A water tank holds 2980 litres. 20% of the water is used. How many litres are left?
10. 10.The price of a school bag changes from ₹3620 to ₹2534. By what percent did it come down?
11. 11.A water tank holds 1740 litres. 5% of the water is used. How many litres are left?
12. 12.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
13. 13.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
14. 14.A shop sells 1300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
15. 15.A shop sells 2540 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
16. 16.The price of a bicycle is ₹140. It goes up by 25%. What is the new price (in ₹)?
17. 17.A shop sells 3880 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
18. 18.A water tank holds 1040 litres. 15% of the water is used. How many litres are left?
19. 19.The price of a school bag changes from ₹3180 to ₹3498. By what percent did it go up?
20. 20.A water tank holds 4740 litres. 20% of the water is used. How many litres are left?
21. 21.A town has 800 people. Its population grows by 5%. How many people live there now?
22. 22.A water tank holds 1280 litres. 10% of the water is used. How many litres are left?
23. 23.A shop sells 280 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
24. 24.The price of a bicycle is ₹4180. It goes up by 40%. What is the new price (in ₹)?
25. 25.A town has 1260 people. Its population grows by 50%. How many people live there now?
26. 26.A shop sells 3700 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
27. 27.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
28. 28.A water tank holds 1300 litres. 50% of the water is used. How many litres are left?
29. 29.A water tank holds 2980 litres. 40% of the water is used. How many litres are left?
30. 30.The price of a school bag changes from ₹2920 to ₹3796. By what percent did it go up?
31. 31.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
32. 32.The price of a bicycle is ₹1340. It goes up by 5%. What is the new price (in ₹)?
33. 33.A shop sells 3780 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
34. 34.A water tank holds 1980 litres. 40% of the water is used. How many litres are left?
35. 35.A town has 4820 people. Its population grows by 5%. How many people live there now?
36. 36.A town has 140 people. Its population grows by 10%. How many people live there now?
37. 37.The price of a school bag changes from ₹3720 to ₹3534. By what percent did it come down?
38. 38.The price of a school bag changes from ₹1060 to ₹954. By what percent did it come down?
39. 39.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
40. 40.A town has 3020 people. Its population grows by 20%. How many people live there now?

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