Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 853 · 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 shop sells 2860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
2. 2.A water tank holds 1180 litres. 30% of the water is used. How many litres are left?
3. 3.The price of a bicycle is ₹1300. It goes up by 10%. What is the new price (in ₹)?
4. 4.A water tank holds 520 litres. 20% of the water is used. How many litres are left?
5. 5.A town has 4920 people. Its population grows by 50%. How many people live there now?
6. 6.The price of a bicycle is ₹3820. It goes up by 15%. What is the new price (in ₹)?
7. 7.The price of a school bag changes from ₹620 to ₹713. By what percent did it go up?
8. 8.The price of a bicycle is ₹4940. It goes up by 20%. What is the new price (in ₹)?
9. 9.A town has 3960 people. Its population grows by 40%. How many people live there now?
10. 10.A shop sells 940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
11. 11.A water tank holds 3140 litres. 10% of the water is used. How many litres are left?
12. 12.A water tank holds 240 litres. 5% of the water is used. How many litres are left?
13. 13.A shop sells 820 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
14. 14.A water tank holds 3560 litres. 25% of the water is used. How many litres are left?
15. 15.The price of a bicycle is ₹3460. It goes up by 10%. What is the new price (in ₹)?
16. 16.The price of a bicycle is ₹3400. It goes up by 30%. What is the new price (in ₹)?
17. 17.The price of a bicycle is ₹900. It goes up by 5%. What is the new price (in ₹)?
18. 18.A water tank holds 4780 litres. 10% of the water is used. How many litres are left?
19. 19.The price of a school bag changes from ₹1840 to ₹1932. By what percent did it go up?
20. 20.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
21. 21.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
22. 22.A water tank holds 2220 litres. 5% of the water is used. How many litres are left?
23. 23.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
24. 24.The price of a bicycle is ₹300. It goes up by 10%. What is the new price (in ₹)?
25. 25.The price of a school bag changes from ₹240 to ₹276. By what percent did it go up?
26. 26.A water tank holds 2880 litres. 30% of the water is used. How many litres are left?
27. 27.A shop sells 900 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
28. 28.A water tank holds 4540 litres. 20% of the water is used. How many litres are left?
29. 29.A water tank holds 220 litres. 15% of the water is used. How many litres are left?
30. 30.The price of a school bag changes from ₹2960 to ₹3108. By what percent did it go up?
31. 31.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
32. 32.The price of a school bag changes from ₹500 to ₹600. By what percent did it go up?
33. 33.A shop sells 3940 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
34. 34.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
35. 35.The price of a school bag changes from ₹4720 to ₹3304. By what percent did it come down?
36. 36.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
37. 37.The price of a bicycle is ₹2460. It goes up by 10%. What is the new price (in ₹)?
38. 38.A shop sells 3120 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
39. 39.The price of a school bag changes from ₹260 to ₹364. By what percent did it go up?
40. 40.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =

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