Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 726 · 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 4840 litres. 30% of the water is used. How many litres are left?
2. 2.A water tank holds 1060 litres. 5% of the water is used. How many litres are left?
3. 3.A water tank holds 1800 litres. 30% of the water is used. How many litres are left?
4. 4.The price of a bicycle is ₹680. It goes up by 50%. What is the new price (in ₹)?
5. 5.The price of a school bag changes from ₹1120 to ₹1232. By what percent did it go up?
6. 6.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
7. 7.A water tank holds 420 litres. 20% of the water is used. How many litres are left?
8. 8.A shop sells 1040 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
9. 9.A water tank holds 2860 litres. 50% of the water is used. How many litres are left?
10. 10.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
11. 11.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
12. 12.The price of a school bag changes from ₹1780 to ₹2314. By what percent did it go up?
13. 13.A town has 4880 people. Its population grows by 20%. How many people live there now?
14. 14.The price of a school bag changes from ₹660 to ₹726. By what percent did it go up?
15. 15.A shop sells 860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
16. 16.A water tank holds 2680 litres. 50% of the water is used. How many litres are left?
17. 17.The price of a bicycle is ₹3920. It goes up by 50%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹2500 to ₹3125. By what percent did it go up?
19. 19.A water tank holds 2880 litres. 20% of the water is used. How many litres are left?
20. 20.A water tank holds 2800 litres. 30% of the water is used. How many litres are left?
21. 21.A water tank holds 120 litres. 15% of the water is used. How many litres are left?
22. 22.A water tank holds 1960 litres. 5% of the water is used. How many litres are left?
23. 23.A water tank holds 2560 litres. 10% of the water is used. How many litres are left?
24. 24.A water tank holds 3100 litres. 40% of the water is used. How many litres are left?
25. 25.A water tank holds 1500 litres. 25% of the water is used. How many litres are left?
26. 26.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
27. 27.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
28. 28.The price of a bicycle is ₹2960. It goes up by 50%. What is the new price (in ₹)?
29. 29.The price of a school bag changes from ₹3220 to ₹3864. By what percent did it go up?
30. 30.A water tank holds 1680 litres. 15% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹2280. It goes up by 50%. What is the new price (in ₹)?
32. 32.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
33. 33.A water tank holds 3220 litres. 20% of the water is used. How many litres are left?
34. 34.The price of a school bag changes from ₹2580 to ₹3354. By what percent did it go up?
35. 35.The price of a bicycle is ₹820. It goes up by 5%. What is the new price (in ₹)?
36. 36.The price of a bicycle is ₹1820. It goes up by 15%. What is the new price (in ₹)?
37. 37.A water tank holds 4140 litres. 50% of the water is used. How many litres are left?
38. 38.The price of a school bag changes from ₹80 to ₹64. By what percent did it come down?
39. 39.A shop sells 260 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
40. 40.A town has 1820 people. Its population grows by 5%. How many people live there now?

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