Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 732 · 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 420 litres. 30% of the water is used. How many litres are left?
2. 2.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
3. 3.A water tank holds 3800 litres. 10% of the water is used. How many litres are left?
4. 4.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
5. 5.The price of a school bag changes from ₹1900 to ₹1425. By what percent did it come down?
6. 6.A shop sells 2300 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
7. 7.A shop sells 3920 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
8. 8.A water tank holds 3080 litres. 25% of the water is used. How many litres are left?
9. 9.The price of a bicycle is ₹2340. It goes up by 5%. What is the new price (in ₹)?
10. 10.The price of a school bag changes from ₹1760 to ₹1320. By what percent did it come down?
11. 11.The price of a bicycle is ₹900. It goes up by 20%. What is the new price (in ₹)?
12. 12.A water tank holds 520 litres. 10% of the water is used. How many litres are left?
13. 13.The price of a bicycle is ₹100. It goes up by 10%. What is the new price (in ₹)?
14. 14.A shop sells 4780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
15. 15.A shop sells 4080 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
16. 16.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
17. 17.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
18. 18.A water tank holds 2440 litres. 40% of the water is used. How many litres are left?
19. 19.The price of a school bag changes from ₹280 to ₹140. By what percent did it come down?
20. 20.A shop sells 2460 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
21. 21.The price of a school bag changes from ₹820 to ₹943. By what percent did it go up?
22. 22.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
23. 23.A water tank holds 4560 litres. 10% of the water is used. How many litres are left?
24. 24.The price of a school bag changes from ₹2760 to ₹3036. By what percent did it go up?
25. 25.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
26. 26.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
27. 27.A water tank holds 2720 litres. 15% of the water is used. How many litres are left?
28. 28.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
29. 29.A town has 1440 people. Its population grows by 5%. How many people live there now?
30. 30.A water tank holds 440 litres. 50% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹3060. It goes up by 30%. What is the new price (in ₹)?
32. 32.A water tank holds 1800 litres. 15% of the water is used. How many litres are left?
33. 33.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
34. 34.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
35. 35.A town has 3460 people. Its population grows by 10%. How many people live there now?
36. 36.A water tank holds 2340 litres. 50% of the water is used. How many litres are left?
37. 37.The price of a school bag changes from ₹1000 to ₹750. By what percent did it come down?
38. 38.The price of a school bag changes from ₹320 to ₹400. By what percent did it go up?
39. 39.The price of a bicycle is ₹1000. It goes up by 30%. What is the new price (in ₹)?
40. 40.A shop sells 4960 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

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