Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 187 · 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 1260 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
2. 2.A water tank holds 4280 litres. 25% of the water is used. How many litres are left?
3. 3.A water tank holds 4300 litres. 20% of the water is used. How many litres are left?
4. 4.The price of a school bag changes from ₹280 to ₹294. By what percent did it go up?
5. 5.The price of a school bag changes from ₹4160 to ₹3744. By what percent did it come down?
6. 6.The price of a bicycle is ₹3020. It goes up by 25%. What is the new price (in ₹)?
7. 7.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
8. 8.The price of a school bag changes from ₹2360 to ₹2950. By what percent did it go up?
9. 9.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
10. 10.A town has 1680 people. Its population grows by 5%. How many people live there now?
11. 11.A water tank holds 2220 litres. 5% of the water is used. How many litres are left?
12. 12.A water tank holds 1200 litres. 5% of the water is used. How many litres are left?
13. 13.The price of a bicycle is ₹740. It goes up by 15%. What is the new price (in ₹)?
14. 14.A water tank holds 2980 litres. 25% of the water is used. How many litres are left?
15. 15.The price of a school bag changes from ₹4680 to ₹5382. By what percent did it go up?
16. 16.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
17. 17.A town has 320 people. Its population grows by 40%. How many people live there now?
18. 18.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
19. 19.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
20. 20.A water tank holds 500 litres. 10% of the water is used. How many litres are left?
21. 21.The price of a school bag changes from ₹180 to ₹216. By what percent did it go up?
22. 22.The price of a bicycle is ₹4800. It goes up by 25%. What is the new price (in ₹)?
23. 23.The price of a school bag changes from ₹1100 to ₹1430. By what percent did it go up?
24. 24.A water tank holds 2580 litres. 10% of the water is used. How many litres are left?
25. 25.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
26. 26.A shop sells 4020 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
27. 27.The price of a school bag changes from ₹4980 to ₹5727. By what percent did it go up?
28. 28.A water tank holds 1780 litres. 10% of the water is used. How many litres are left?
29. 29.A water tank holds 4100 litres. 25% of the water is used. How many litres are left?
30. 30.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
31. 31.A water tank holds 460 litres. 50% of the water is used. How many litres are left?
32. 32.The price of a school bag changes from ₹240 to ₹252. By what percent did it go up?
33. 33.The price of a school bag changes from ₹240 to ₹204. By what percent did it come down?
34. 34.A water tank holds 4360 litres. 30% of the water is used. How many litres are left?
35. 35.A town has 4300 people. Its population grows by 5%. How many people live there now?
36. 36.A water tank holds 680 litres. 10% of the water is used. How many litres are left?
37. 37.A town has 3040 people. Its population grows by 40%. How many people live there now?
38. 38.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
39. 39.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
40. 40.A water tank holds 700 litres. 50% of the water is used. How many litres are left?

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