Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 371 · 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 shop sells 4940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
2. 2.The price of a school bag changes from ₹1200 to ₹1140. By what percent did it come down?
3. 3.A water tank holds 1140 litres. 20% of the water is used. How many litres are left?
4. 4.A shop sells 4040 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
5. 5.The price of a bicycle is ₹1600. It goes up by 10%. What is the new price (in ₹)?
6. 6.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
7. 7.A water tank holds 4820 litres. 15% of the water is used. How many litres are left?
8. 8.A water tank holds 3700 litres. 5% of the water is used. How many litres are left?
9. 9.A shop sells 1180 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
10. 10.The price of a bicycle is ₹1100. It goes up by 20%. What is the new price (in ₹)?
11. 11.A town has 3880 people. Its population grows by 15%. How many people live there now?
12. 12.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
13. 13.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
14. 14.The price of a school bag changes from ₹2600 to ₹1560. By what percent did it come down?
15. 15.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
16. 16.The price of a bicycle is ₹100. It goes up by 15%. What is the new price (in ₹)?
17. 17.The price of a school bag changes from ₹1480 to ₹1554. By what percent did it go up?
18. 18.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
19. 19.A water tank holds 2200 litres. 5% of the water is used. How many litres are left?
20. 20.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
21. 21.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
22. 22.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
23. 23.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
24. 24.The price of a bicycle is ₹1460. It goes up by 20%. What is the new price (in ₹)?
25. 25.A water tank holds 2800 litres. 10% of the water is used. How many litres are left?
26. 26.The price of a bicycle is ₹3140. It goes up by 5%. What is the new price (in ₹)?
27. 27.A shop sells 4860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
28. 28.A shop sells 3360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
29. 29.A water tank holds 1380 litres. 50% of the water is used. How many litres are left?
30. 30.A water tank holds 1200 litres. 5% of the water is used. How many litres are left?
31. 31.A town has 3380 people. Its population grows by 30%. How many people live there now?
32. 32.A water tank holds 3840 litres. 30% of the water is used. How many litres are left?
33. 33.The price of a bicycle is ₹3280. It goes up by 50%. What is the new price (in ₹)?
34. 34.A water tank holds 2420 litres. 5% of the water is used. How many litres are left?
35. 35.The price of a school bag changes from ₹3400 to ₹3060. By what percent did it come down?
36. 36.A water tank holds 4980 litres. 20% of the water is used. How many litres are left?
37. 37.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
38. 38.The price of a school bag changes from ₹4780 to ₹2868. By what percent did it come down?
39. 39.The price of a school bag changes from ₹4780 to ₹5258. By what percent did it go up?
40. 40.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =

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