Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 468 · 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 4400 litres. 40% of the water is used. How many litres are left?
2. 2.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
3. 3.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
4. 4.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
5. 5.A water tank holds 2180 litres. 30% of the water is used. How many litres are left?
6. 6.The price of a school bag changes from ₹3100 to ₹4340. By what percent did it go up?
7. 7.The price of a bicycle is ₹1000. It goes up by 20%. What is the new price (in ₹)?
8. 8.The price of a school bag changes from ₹1780 to ₹2225. By what percent did it go up?
9. 9.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
10. 10.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
11. 11.A shop sells 720 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
12. 12.A water tank holds 2620 litres. 15% of the water is used. How many litres are left?
13. 13.A water tank holds 1560 litres. 20% of the water is used. How many litres are left?
14. 14.A water tank holds 4220 litres. 25% of the water is used. How many litres are left?
15. 15.A town has 3780 people. Its population grows by 20%. How many people live there now?
16. 16.A water tank holds 760 litres. 50% of the water is used. How many litres are left?
17. 17.A water tank holds 1080 litres. 30% of the water is used. How many litres are left?
18. 18.The price of a bicycle is ₹360. It goes up by 15%. What is the new price (in ₹)?
19. 19.A water tank holds 4380 litres. 15% of the water is used. How many litres are left?
20. 20.The price of a school bag changes from ₹3500 to ₹4025. By what percent did it go up?
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.A water tank holds 2560 litres. 50% of the water is used. How many litres are left?
23. 23.A shop sells 2420 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
24. 24.A water tank holds 4980 litres. 25% of the water is used. How many litres are left?
25. 25.A town has 1800 people. Its population grows by 15%. How many people live there now?
26. 26.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
27. 27.The price of a school bag changes from ₹4960 to ₹5704. By what percent did it go up?
28. 28.The price of a school bag changes from ₹3460 to ₹3287. By what percent did it come down?
29. 29.A water tank holds 3860 litres. 40% of the water is used. How many litres are left?
30. 30.A water tank holds 2420 litres. 10% of the water is used. How many litres are left?
31. 31.A water tank holds 4600 litres. 25% of the water is used. How many litres are left?
32. 32.The price of a bicycle is ₹2380. It goes up by 50%. What is the new price (in ₹)?
33. 33.A water tank holds 4240 litres. 10% of the water is used. How many litres are left?
34. 34.A water tank holds 3640 litres. 20% of the water is used. How many litres are left?
35. 35.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
36. 36.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
37. 37.A town has 3240 people. Its population grows by 5%. How many people live there now?
38. 38.A town has 2080 people. Its population grows by 5%. How many people live there now?
39. 39.The price of a bicycle is ₹2140. It goes up by 15%. What is the new price (in ₹)?
40. 40.The price of a bicycle is ₹1380. It goes up by 5%. What is the new price (in ₹)?

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