Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 813 · 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 ₹2200. It goes up by 50%. What is the new price (in ₹)?
2. 2.A water tank holds 2900 litres. 30% of the water is used. How many litres are left?
3. 3.The price of a bicycle is ₹780. It goes up by 30%. What is the new price (in ₹)?
4. 4.A shop sells 820 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
5. 5.The price of a bicycle is ₹3600. It goes up by 30%. What is the new price (in ₹)?
6. 6.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
7. 7.A water tank holds 4520 litres. 15% of the water is used. How many litres are left?
8. 8.The price of a school bag changes from ₹3860 to ₹2895. By what percent did it come down?
9. 9.A water tank holds 1720 litres. 50% of the water is used. How many litres are left?
10. 10.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
11. 11.The price of a bicycle is ₹4280. It goes up by 50%. What is the new price (in ₹)?
12. 12.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
13. 13.The price of a bicycle is ₹380. It goes up by 40%. What is the new price (in ₹)?
14. 14.A water tank holds 1960 litres. 5% of the water is used. How many litres are left?
15. 15.A water tank holds 520 litres. 40% of the water is used. How many litres are left?
16. 16.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
17. 17.The price of a school bag changes from ₹660 to ₹759. By what percent did it go up?
18. 18.A water tank holds 3820 litres. 10% of the water is used. How many litres are left?
19. 19.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
20. 20.A water tank holds 3320 litres. 25% of the water is used. How many litres are left?
21. 21.The price of a school bag changes from ₹500 to ₹250. By what percent did it come down?
22. 22.A water tank holds 460 litres. 10% of the water is used. How many litres are left?
23. 23.A water tank holds 2440 litres. 30% of the water is used. How many litres are left?
24. 24.A water tank holds 1940 litres. 40% of the water is used. How many litres are left?
25. 25.The price of a school bag changes from ₹2160 to ₹2700. By what percent did it go up?
26. 26.A town has 3420 people. Its population grows by 20%. How many people live there now?
27. 27.A water tank holds 4100 litres. 40% of the water is used. How many litres are left?
28. 28.A water tank holds 3520 litres. 30% of the water is used. How many litres are left?
29. 29.A shop sells 1820 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
30. 30.A water tank holds 600 litres. 30% of the water is used. How many litres are left?
31. 31.The price of a school bag changes from ₹4460 to ₹4683. By what percent did it go up?
32. 32.The price of a bicycle is ₹1760. It goes up by 40%. What is the new price (in ₹)?
33. 33.The price of a bicycle is ₹2760. It goes up by 5%. What is the new price (in ₹)?
34. 34.A town has 2280 people. Its population grows by 20%. How many people live there now?
35. 35.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
36. 36.The price of a school bag changes from ₹2900 to ₹2320. By what percent did it come down?
37. 37.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
38. 38.A water tank holds 4420 litres. 10% of the water is used. How many litres are left?
39. 39.A town has 3020 people. Its population grows by 5%. How many people live there now?
40. 40.The price of a bicycle is ₹3260. It goes up by 40%. What is the new price (in ₹)?

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