Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 912 · 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 price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
2. 2.A shop sells 4640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
3. 3.A shop sells 2300 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
4. 4.The price of a bicycle is ₹4920. It goes up by 50%. What is the new price (in ₹)?
5. 5.A town has 3900 people. Its population grows by 5%. How many people live there now?
6. 6.The price of a bicycle is ₹280. It goes up by 40%. What is the new price (in ₹)?
7. 7.A shop sells 1120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
8. 8.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
9. 9.A town has 240 people. Its population grows by 10%. How many people live there now?
10. 10.A water tank holds 4020 litres. 50% of the water is used. How many litres are left?
11. 11.A town has 300 people. Its population grows by 15%. How many people live there now?
12. 12.A water tank holds 3460 litres. 15% of the water is used. How many litres are left?
13. 13.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
14. 14.A shop sells 80 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
15. 15.A water tank holds 4720 litres. 5% of the water is used. How many litres are left?
16. 16.The price of a school bag changes from ₹400 to ₹360. By what percent did it come down?
17. 17.A town has 4680 people. Its population grows by 30%. How many people live there now?
18. 18.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
19. 19.A town has 3100 people. Its population grows by 5%. How many people live there now?
20. 20.A shop sells 3340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
21. 21.A water tank holds 240 litres. 5% of the water is used. How many litres are left?
22. 22.The price of a bicycle is ₹1340. It goes up by 25%. What is the new price (in ₹)?
23. 23.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
24. 24.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
25. 25.A water tank holds 180 litres. 50% of the water is used. How many litres are left?
26. 26.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
27. 27.A town has 2740 people. Its population grows by 20%. How many people live there now?
28. 28.A water tank holds 140 litres. 15% of the water is used. How many litres are left?
29. 29.A town has 2220 people. Its population grows by 25%. How many people live there now?
30. 30.A water tank holds 4640 litres. 25% of the water is used. How many litres are left?
31. 31.A town has 2100 people. Its population grows by 30%. How many people live there now?
32. 32.The price of a school bag changes from ₹2000 to ₹1700. By what percent did it come down?
33. 33.The price of a school bag changes from ₹980 to ₹1127. By what percent did it go up?
34. 34.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
35. 35.The price of a school bag changes from ₹1060 to ₹1325. By what percent did it go up?
36. 36.The price of a school bag changes from ₹1280 to ₹1472. By what percent did it go up?
37. 37.A town has 4220 people. Its population grows by 10%. How many people live there now?
38. 38.A water tank holds 2980 litres. 15% of the water is used. How many litres are left?
39. 39.A town has 2460 people. Its population grows by 30%. How many people live there now?
40. 40.A town has 2960 people. Its population grows by 5%. How many people live there now?

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