Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 792 · 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 bicycle is ₹1600. It goes up by 25%. What is the new price (in ₹)?
2. 2.A water tank holds 2000 litres. 10% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹2160 to ₹1944. By what percent did it come down?
4. 4.A town has 1840 people. Its population grows by 20%. How many people live there now?
5. 5.The price of a school bag changes from ₹4520 to ₹5198. By what percent did it go up?
6. 6.A shop sells 920 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
7. 7.The price of a bicycle is ₹3180. It goes up by 40%. What is the new price (in ₹)?
8. 8.A town has 1480 people. Its population grows by 30%. How many people live there now?
9. 9.The price of a school bag changes from ₹2640 to ₹2772. By what percent did it go up?
10. 10.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
11. 11.A price comes down by 10% and then comes down by 25% more. By what percent has it come down 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.A water tank holds 420 litres. 10% of the water is used. How many litres are left?
14. 14.The price of a school bag changes from ₹2180 to ₹1853. By what percent did it come down?
15. 15.The price of a school bag changes from ₹4560 to ₹6384. By what percent did it go up?
16. 16.A water tank holds 2800 litres. 10% of the water is used. How many litres are left?
17. 17.The price of a school bag changes from ₹1300 to ₹1040. By what percent did it come down?
18. 18.The price of a school bag changes from ₹540 to ₹702. By what percent did it go up?
19. 19.The price of a school bag changes from ₹3120 to ₹3900. By what percent did it go up?
20. 20.A water tank holds 2360 litres. 50% of the water is used. How many litres are left?
21. 21.A water tank holds 3460 litres. 20% of the water is used. How many litres are left?
22. 22.A town has 580 people. Its population grows by 40%. How many people live there now?
23. 23.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
24. 24.A water tank holds 3840 litres. 15% of the water is used. How many litres are left?
25. 25.The price of a bicycle is ₹2320. It goes up by 30%. What is the new price (in ₹)?
26. 26.A water tank holds 3080 litres. 30% of the water is used. How many litres are left?
27. 27.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
28. 28.A town has 4520 people. Its population grows by 20%. How many people live there now?
29. 29.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
30. 30.A water tank holds 1020 litres. 5% of the water is used. How many litres are left?
31. 31.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
32. 32.The price of a school bag changes from ₹3420 to ₹3249. By what percent did it come down?
33. 33.A town has 1840 people. Its population grows by 30%. How many people live there now?
34. 34.A water tank holds 2240 litres. 40% of the water is used. How many litres are left?
35. 35.The price of a bicycle is ₹1260. It goes up by 40%. What is the new price (in ₹)?
36. 36.A shop sells 2500 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
37. 37.A shop sells 4060 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
38. 38.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
39. 39.A shop sells 580 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
40. 40.A water tank holds 4400 litres. 5% of the water is used. How many litres are left?

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