Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 164 · 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.The price of a bicycle is ₹2440. It goes up by 10%. What is the new price (in ₹)?
2. 2.A water tank holds 4000 litres. 5% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹620 to ₹558. By what percent did it come down?
4. 4.A town has 3560 people. Its population grows by 50%. How many people live there now?
5. 5.A water tank holds 1920 litres. 20% of the water is used. How many litres are left?
6. 6.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
7. 7.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
8. 8.The price of a school bag changes from ₹2580 to ₹1935. By what percent did it come down?
9. 9.A town has 4500 people. Its population grows by 30%. How many people live there now?
10. 10.A water tank holds 2000 litres. 15% of the water is used. How many litres are left?
11. 11.A water tank holds 560 litres. 5% of the water is used. How many litres are left?
12. 12.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
13. 13.A shop sells 2180 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
14. 14.The price of a bicycle is ₹1160. It goes up by 15%. What is the new price (in ₹)?
15. 15.The price of a bicycle is ₹2000. It goes up by 30%. What is the new price (in ₹)?
16. 16.A water tank holds 4240 litres. 40% of the water is used. How many litres are left?
17. 17.The price of a bicycle is ₹660. It goes up by 5%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹2560 to ₹3072. By what percent did it go up?
19. 19.A town has 3660 people. Its population grows by 20%. How many people live there now?
20. 20.The price of a school bag changes from ₹3680 to ₹4784. By what percent did it go up?
21. 21.A water tank holds 4080 litres. 20% of the water is used. How many litres are left?
22. 22.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
23. 23.The price of a school bag changes from ₹1920 to ₹1536. By what percent did it come down?
24. 24.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
25. 25.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
26. 26.A water tank holds 2740 litres. 20% of the water is used. How many litres are left?
27. 27.The price of a bicycle is ₹960. It goes up by 30%. What is the new price (in ₹)?
28. 28.The price of a bicycle is ₹4640. It goes up by 10%. What is the new price (in ₹)?
29. 29.A shop sells 420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
30. 30.A water tank holds 2960 litres. 15% of the water is used. How many litres are left?
31. 31.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
32. 32.The price of a bicycle is ₹2440. It goes up by 5%. What is the new price (in ₹)?
33. 33.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
34. 34.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
35. 35.A water tank holds 3640 litres. 10% of the water is used. How many litres are left?
36. 36.The price of a bicycle is ₹4880. It goes up by 15%. What is the new price (in ₹)?
37. 37.A water tank holds 3980 litres. 40% of the water is used. How many litres are left?
38. 38.A water tank holds 4560 litres. 5% of the water is used. How many litres are left?
39. 39.A town has 4840 people. Its population grows by 10%. How many people live there now?
40. 40.A water tank holds 2240 litres. 30% of the water is used. How many litres are left?

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