Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 223 · 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 3820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
2. 2.A town has 2160 people. Its population grows by 50%. How many people live there now?
3. 3.The price of a bicycle is ₹3740. It goes up by 50%. What is the new price (in ₹)?
4. 4.The price of a bicycle is ₹1100. It goes up by 40%. What is the new price (in ₹)?
5. 5.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
6. 6.The price of a school bag changes from ₹4360 to ₹5014. By what percent did it go up?
7. 7.A shop sells 3020 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
8. 8.A water tank holds 600 litres. 20% of the water is used. How many litres are left?
9. 9.The price of a school bag changes from ₹2920 to ₹2336. By what percent did it come down?
10. 10.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
11. 11.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
12. 12.The price of a school bag changes from ₹4880 to ₹5368. By what percent did it go up?
13. 13.A water tank holds 2140 litres. 10% of the water is used. How many litres are left?
14. 14.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
15. 15.A water tank holds 2620 litres. 5% of the water is used. How many litres are left?
16. 16.A town has 3120 people. Its population grows by 5%. How many people live there now?
17. 17.The price of a bicycle is ₹4260. It goes up by 5%. What is the new price (in ₹)?
18. 18.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
19. 19.A town has 3620 people. Its population grows by 50%. How many people live there now?
20. 20.The price of a school bag changes from ₹260 to ₹247. By what percent did it come down?
21. 21.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
22. 22.A water tank holds 3260 litres. 50% of the water is used. How many litres are left?
23. 23.A water tank holds 4300 litres. 15% of the water is used. How many litres are left?
24. 24.The price of a school bag changes from ₹880 to ₹1232. By what percent did it go up?
25. 25.A shop sells 2700 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
26. 26.A water tank holds 2760 litres. 20% of the water is used. How many litres are left?
27. 27.The price of a bicycle is ₹160. It goes up by 10%. What is the new price (in ₹)?
28. 28.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
29. 29.A water tank holds 4860 litres. 5% of the water is used. How many litres are left?
30. 30.A water tank holds 2580 litres. 30% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹1960. It goes up by 50%. What is the new price (in ₹)?
32. 32.A town has 680 people. Its population grows by 40%. How many people live there now?
33. 33.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
34. 34.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
35. 35.A town has 3320 people. Its population grows by 15%. How many people live there now?
36. 36.A water tank holds 1760 litres. 40% of the water is used. How many litres are left?
37. 37.A water tank holds 4800 litres. 30% of the water is used. How many litres are left?
38. 38.A town has 2520 people. Its population grows by 15%. How many people live there now?
39. 39.A shop sells 2160 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
40. 40.A town has 1340 people. Its population grows by 25%. How many people live there now?

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