Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 467 · 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 5000 litres. 40% of the water is used. How many litres are left?
2. 2.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
3. 3.The price of a bicycle is ₹860. It goes up by 10%. What is the new price (in ₹)?
4. 4.A water tank holds 4740 litres. 5% of the water is used. How many litres are left?
5. 5.The price of a bicycle is ₹720. It goes up by 50%. What is the new price (in ₹)?
6. 6.The price of a school bag changes from ₹1180 to ₹1534. By what percent did it go up?
7. 7.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
8. 8.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
9. 9.A water tank holds 4340 litres. 5% of the water is used. How many litres are left?
10. 10.A shop sells 3160 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
11. 11.The price of a school bag changes from ₹2840 to ₹3976. By what percent did it go up?
12. 12.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
13. 13.The price of a school bag changes from ₹1400 to ₹1540. By what percent did it go up?
14. 14.A shop sells 3860 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
15. 15.A water tank holds 2880 litres. 30% of the water is used. How many litres are left?
16. 16.A water tank holds 840 litres. 30% of the water is used. How many litres are left?
17. 17.A water tank holds 2740 litres. 15% of the water is used. How many litres are left?
18. 18.The price of a bicycle is ₹320. It goes up by 10%. What is the new price (in ₹)?
19. 19.A shop sells 4660 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
20. 20.A town has 1400 people. Its population grows by 5%. How many people live there now?
21. 21.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
22. 22.A town has 4320 people. Its population grows by 5%. How many people live there now?
23. 23.A water tank holds 3400 litres. 15% of the water is used. How many litres are left?
24. 24.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
25. 25.A water tank holds 300 litres. 15% of the water is used. How many litres are left?
26. 26.A water tank holds 4720 litres. 30% of the water is used. How many litres are left?
27. 27.A shop sells 3100 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
28. 28.The price of a school bag changes from ₹3060 to ₹4590. By what percent did it go up?
29. 29.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
30. 30.A water tank holds 2780 litres. 15% of the water is used. How many litres are left?
31. 31.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
32. 32.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
33. 33.The price of a school bag changes from ₹3380 to ₹3549. By what percent did it go up?
34. 34.The price of a bicycle is ₹1640. It goes up by 20%. What is the new price (in ₹)?
35. 35.A shop sells 1520 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
36. 36.A shop sells 3040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
37. 37.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
38. 38.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
39. 39.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
40. 40.The price of a school bag changes from ₹120 to ₹126. By what percent did it go up?

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