Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 144 · 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 ₹1240. It goes up by 10%. What is the new price (in ₹)?
2. 2.A water tank holds 4700 litres. 5% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹1900 to ₹2470. By what percent did it go up?
4. 4.A water tank holds 2640 litres. 15% of the water is used. How many litres are left?
5. 5.The price of a school bag changes from ₹4000 to ₹4400. By what percent did it go up?
6. 6.A water tank holds 2260 litres. 15% of the water is used. How many litres are left?
7. 7.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
8. 8.A shop sells 900 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
9. 9.A town has 1580 people. Its population grows by 30%. How many people live there now?
10. 10.The price of a school bag changes from ₹1180 to ₹1062. By what percent did it come down?
11. 11.The price of a school bag changes from ₹2320 to ₹2436. By what percent did it go up?
12. 12.The price of a bicycle is ₹220. It goes up by 5%. What is the new price (in ₹)?
13. 13.The price of a bicycle is ₹4500. It goes up by 40%. What is the new price (in ₹)?
14. 14.A shop sells 760 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
15. 15.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
16. 16.The price of a bicycle is ₹300. It goes up by 10%. What is the new price (in ₹)?
17. 17.A water tank holds 2440 litres. 10% of the water is used. How many litres are left?
18. 18.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
19. 19.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
20. 20.The price of a school bag changes from ₹820 to ₹492. By what percent did it come down?
21. 21.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
22. 22.The price of a school bag changes from ₹4500 to ₹6300. By what percent did it go up?
23. 23.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
24. 24.The price of a school bag changes from ₹4660 to ₹3262. By what percent did it come down?
25. 25.A shop sells 2100 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
26. 26.A water tank holds 1940 litres. 50% of the water is used. How many litres are left?
27. 27.A town has 4580 people. Its population grows by 5%. How many people live there now?
28. 28.The price of a school bag changes from ₹3880 to ₹3686. By what percent did it come down?
29. 29.A water tank holds 1060 litres. 25% of the water is used. How many litres are left?
30. 30.A water tank holds 1080 litres. 40% of the water is used. How many litres are left?
31. 31.The price of a school bag changes from ₹4900 to ₹3920. By what percent did it come down?
32. 32.A water tank holds 3640 litres. 15% of the water is used. How many litres are left?
33. 33.A shop sells 420 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
34. 34.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
35. 35.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
36. 36.The price of a bicycle is ₹3660. It goes up by 25%. What is the new price (in ₹)?
37. 37.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
38. 38.A water tank holds 1120 litres. 30% of the water is used. How many litres are left?
39. 39.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
40. 40.A water tank holds 3100 litres. 20% of the water is used. How many litres are left?

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