Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 658 · 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 3700 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
2. 2.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
3. 3.A water tank holds 160 litres. 50% of the water is used. How many litres are left?
4. 4.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
5. 5.The price of a school bag changes from ₹580 to ₹754. By what percent did it go up?
6. 6.A shop sells 3520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
7. 7.A town has 920 people. Its population grows by 20%. How many people live there now?
8. 8.The price of a school bag changes from ₹2440 to ₹1830. By what percent did it come down?
9. 9.A town has 3280 people. Its population grows by 5%. How many people live there now?
10. 10.A water tank holds 1640 litres. 10% of the water is used. How many litres are left?
11. 11.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
12. 12.The price of a bicycle is ₹620. It goes up by 20%. What is the new price (in ₹)?
13. 13.A water tank holds 4280 litres. 30% of the water is used. How many litres are left?
14. 14.A water tank holds 200 litres. 5% of the water is used. How many litres are left?
15. 15.The price of a bicycle is ₹1840. It goes up by 10%. What is the new price (in ₹)?
16. 16.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
17. 17.A water tank holds 200 litres. 20% of the water is used. How many litres are left?
18. 18.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
19. 19.A water tank holds 560 litres. 5% of the water is used. How many litres are left?
20. 20.The price of a school bag changes from ₹2580 to ₹2451. By what percent did it come down?
21. 21.The price of a school bag changes from ₹260 to ₹247. By what percent did it come down?
22. 22.A town has 620 people. Its population grows by 40%. How many people live there now?
23. 23.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
24. 24.A water tank holds 4720 litres. 10% of the water is used. How many litres are left?
25. 25.The price of a bicycle is ₹2420. It goes up by 10%. What is the new price (in ₹)?
26. 26.A water tank holds 200 litres. 40% of the water is used. How many litres are left?
27. 27.The price of a school bag changes from ₹2080 to ₹2288. By what percent did it go up?
28. 28.A water tank holds 920 litres. 30% of the water is used. How many litres are left?
29. 29.The price of a school bag changes from ₹4040 to ₹4848. By what percent did it go up?
30. 30.A water tank holds 2440 litres. 15% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹3560. It goes up by 30%. What is the new price (in ₹)?
32. 32.A water tank holds 800 litres. 30% of the water is used. How many litres are left?
33. 33.A shop sells 220 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
34. 34.The price of a school bag changes from ₹1220 to ₹1525. By what percent did it go up?
35. 35.A water tank holds 1420 litres. 15% of the water is used. How many litres are left?
36. 36.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
37. 37.The price of a school bag changes from ₹1100 to ₹1045. By what percent did it come down?
38. 38.A water tank holds 2160 litres. 20% of the water is used. How many litres are left?
39. 39.A water tank holds 4280 litres. 5% of the water is used. How many litres are left?
40. 40.The price of a school bag changes from ₹340 to ₹510. By what percent did it go up?

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