Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 470 · 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 2120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
2. 2.A shop sells 1540 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
3. 3.A shop sells 3200 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
4. 4.A shop sells 320 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
5. 5.A water tank holds 320 litres. 25% of the water is used. How many litres are left?
6. 6.A water tank holds 2460 litres. 5% of the water is used. How many litres are left?
7. 7.The price of a bicycle is ₹4540. It goes up by 50%. What is the new price (in ₹)?
8. 8.A town has 1780 people. Its population grows by 5%. How many people live there now?
9. 9.A shop sells 2860 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
10. 10.The price of a bicycle is ₹2140. It goes up by 20%. What is the new price (in ₹)?
11. 11.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
12. 12.The price of a school bag changes from ₹3680 to ₹1840. By what percent did it come down?
13. 13.The price of a bicycle is ₹3900. It goes up by 30%. What is the new price (in ₹)?
14. 14.A water tank holds 3580 litres. 50% of the water is used. How many litres are left?
15. 15.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
16. 16.A water tank holds 3560 litres. 25% of the water is used. How many litres are left?
17. 17.The price of a bicycle is ₹3240. It goes up by 10%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹3020 to ₹1812. By what percent did it come down?
19. 19.A shop sells 3120 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 780 litres. 20% of the water is used. How many litres are left?
21. 21.A shop sells 920 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
22. 22.A water tank holds 3720 litres. 30% of the water is used. How many litres are left?
23. 23.A town has 4640 people. Its population grows by 30%. How many people live there now?
24. 24.A town has 100 people. Its population grows by 30%. How many people live there now?
25. 25.A town has 4520 people. Its population grows by 30%. How many people live there now?
26. 26.A town has 100 people. Its population grows by 10%. How many people live there now?
27. 27.A water tank holds 200 litres. 50% of the water is used. How many litres are left?
28. 28.A water tank holds 1760 litres. 15% of the water is used. How many litres are left?
29. 29.The price of a bicycle is ₹260. It goes up by 10%. What is the new price (in ₹)?
30. 30.A water tank holds 4060 litres. 5% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹240. It goes up by 25%. What is the new price (in ₹)?
32. 32.The price of a school bag changes from ₹1000 to ₹600. By what percent did it come down?
33. 33.A shop sells 760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
34. 34.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
35. 35.The price of a bicycle is ₹2380. It goes up by 5%. What is the new price (in ₹)?
36. 36.The price of a school bag changes from ₹4520 to ₹3390. By what percent did it come down?
37. 37.The price of a bicycle is ₹1920. It goes up by 10%. What is the new price (in ₹)?
38. 38.A water tank holds 980 litres. 20% of the water is used. How many litres are left?
39. 39.A water tank holds 1680 litres. 30% of the water is used. How many litres are left?
40. 40.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =

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