Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 669 · 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 price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
2. 2.A water tank holds 4480 litres. 50% of the water is used. How many litres are left?
3. 3.A water tank holds 400 litres. 15% of the water is used. How many litres are left?
4. 4.The price of a bicycle is ₹2780. It goes up by 15%. What is the new price (in ₹)?
5. 5.The price of a bicycle is ₹1180. It goes up by 5%. What is the new price (in ₹)?
6. 6.A shop sells 1460 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
7. 7.A shop sells 580 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
8. 8.A water tank holds 3060 litres. 25% of the water is used. How many litres are left?
9. 9.A water tank holds 4020 litres. 40% of the water is used. How many litres are left?
10. 10.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
11. 11.A water tank holds 920 litres. 15% of the water is used. How many litres are left?
12. 12.A town has 1700 people. Its population grows by 50%. How many people live there now?
13. 13.A water tank holds 2100 litres. 15% of the water is used. How many litres are left?
14. 14.The price of a school bag changes from ₹2140 to ₹1926. By what percent did it come down?
15. 15.A shop sells 2760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
16. 16.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
17. 17.A town has 240 people. Its population grows by 40%. How many people live there now?
18. 18.The price of a school bag changes from ₹3140 to ₹2198. By what percent did it come down?
19. 19.A shop sells 980 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
20. 20.A water tank holds 860 litres. 30% of the water is used. How many litres are left?
21. 21.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
22. 22.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
23. 23.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
24. 24.A water tank holds 140 litres. 50% of the water is used. How many litres are left?
25. 25.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
26. 26.A town has 4280 people. Its population grows by 5%. How many people live there now?
27. 27.A town has 1220 people. Its population grows by 20%. How many people live there now?
28. 28.The price of a school bag changes from ₹560 to ₹700. By what percent did it go up?
29. 29.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
30. 30.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
31. 31.The price of a bicycle is ₹2840. It goes up by 5%. What is the new price (in ₹)?
32. 32.A town has 2260 people. Its population grows by 20%. How many people live there now?
33. 33.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
34. 34.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
35. 35.A water tank holds 1240 litres. 40% of the water is used. How many litres are left?
36. 36.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
37. 37.The price of a school bag changes from ₹3160 to ₹4108. By what percent did it go up?
38. 38.The price of a school bag changes from ₹2660 to ₹2394. By what percent did it come down?
39. 39.A water tank holds 320 litres. 50% of the water is used. How many litres are left?
40. 40.A water tank holds 700 litres. 25% of the water is used. How many litres are left?

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