Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 571 · 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 4460 litres. 40% of the water is used. How many litres are left?
2. 2.A shop sells 1240 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
3. 3.The price of a bicycle is ₹4100. It goes up by 30%. What is the new price (in ₹)?
4. 4.A water tank holds 3660 litres. 15% of the water is used. How many litres are left?
5. 5.A shop sells 3060 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
6. 6.A shop sells 1420 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
7. 7.A town has 1540 people. Its population grows by 25%. How many people live there now?
8. 8.The price of a school bag changes from ₹1720 to ₹1806. By what percent did it go up?
9. 9.The price of a bicycle is ₹1860. It goes up by 30%. What is the new price (in ₹)?
10. 10.A water tank holds 4660 litres. 15% of the water is used. How many litres are left?
11. 11.A water tank holds 820 litres. 50% of the water is used. How many litres are left?
12. 12.A shop sells 3060 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
13. 13.The price of a school bag changes from ₹760 to ₹456. By what percent did it come down?
14. 14.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
15. 15.A shop sells 3420 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
16. 16.A water tank holds 520 litres. 40% of the water is used. How many litres are left?
17. 17.A town has 420 people. Its population grows by 20%. How many people live there now?
18. 18.The price of a bicycle is ₹2260. It goes up by 30%. What is the new price (in ₹)?
19. 19.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
20. 20.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
21. 21.The price of a school bag changes from ₹620 to ₹496. By what percent did it come down?
22. 22.A town has 4400 people. Its population grows by 10%. How many people live there now?
23. 23.A water tank holds 940 litres. 10% of the water is used. How many litres are left?
24. 24.A water tank holds 4880 litres. 30% of the water is used. How many litres are left?
25. 25.The price of a school bag changes from ₹900 to ₹1125. By what percent did it go up?
26. 26.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
27. 27.The price of a school bag changes from ₹4100 to ₹2870. By what percent did it come down?
28. 28.The price of a bicycle is ₹980. It goes up by 20%. What is the new price (in ₹)?
29. 29.A shop sells 4280 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
30. 30.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
31. 31.The price of a school bag changes from ₹300 to ₹270. By what percent did it come down?
32. 32.The price of a school bag changes from ₹3580 to ₹4117. By what percent did it go up?
33. 33.A shop sells 3520 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
34. 34.The price of a bicycle is ₹2800. It goes up by 30%. What is the new price (in ₹)?
35. 35.The price of a school bag changes from ₹2260 to ₹2712. By what percent did it go up?
36. 36.A town has 1780 people. Its population grows by 25%. How many people live there now?
37. 37.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
38. 38.A shop sells 3360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
39. 39.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
40. 40.The price of a school bag changes from ₹3680 to ₹3128. By what percent did it come down?

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