Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 219 · 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 goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
2. 2.A water tank holds 2740 litres. 20% of the water is used. How many litres are left?
3. 3.The price of a bicycle is ₹340. It goes up by 10%. What is the new price (in ₹)?
4. 4.A shop sells 2380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
5. 5.A town has 1000 people. Its population grows by 20%. How many people live there now?
6. 6.The price of a bicycle is ₹460. It goes up by 30%. What is the new price (in ₹)?
7. 7.A town has 3200 people. Its population grows by 15%. How many people live there now?
8. 8.The price of a school bag changes from ₹2600 to ₹2080. By what percent did it come down?
9. 9.A water tank holds 3560 litres. 10% of the water is used. How many litres are left?
10. 10.A shop sells 980 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
11. 11.The price of a bicycle is ₹1020. It goes up by 30%. What is the new price (in ₹)?
12. 12.A water tank holds 2280 litres. 50% of the water is used. How many litres are left?
13. 13.The price of a bicycle is ₹260. It goes up by 10%. What is the new price (in ₹)?
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.The price of a school bag changes from ₹780 to ₹1014. By what percent did it go up?
16. 16.A water tank holds 2400 litres. 40% of the water is used. How many litres are left?
17. 17.A town has 3820 people. Its population grows by 50%. How many people live there now?
18. 18.The price of a bicycle is ₹4100. It goes up by 5%. What is the new price (in ₹)?
19. 19.A town has 4980 people. Its population grows by 40%. How many people live there now?
20. 20.A water tank holds 780 litres. 5% of the water is used. How many litres are left?
21. 21.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
22. 22.A shop sells 3080 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
23. 23.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
24. 24.The price of a school bag changes from ₹1180 to ₹708. By what percent did it come down?
25. 25.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
26. 26.The price of a school bag changes from ₹3840 to ₹2880. By what percent did it come down?
27. 27.A shop sells 3120 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
28. 28.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
29. 29.A water tank holds 4760 litres. 15% of the water is used. How many litres are left?
30. 30.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
31. 31.A water tank holds 220 litres. 15% of the water is used. How many litres are left?
32. 32.A water tank holds 780 litres. 20% of the water is used. How many litres are left?
33. 33.A water tank holds 1880 litres. 10% of the water is used. How many litres are left?
34. 34.The price of a bicycle is ₹2600. It goes up by 15%. What is the new price (in ₹)?
35. 35.A water tank holds 740 litres. 5% of the water is used. How many litres are left?
36. 36.The price of a school bag changes from ₹2240 to ₹2016. By what percent did it come down?
37. 37.The price of a bicycle is ₹4360. It goes up by 30%. What is the new price (in ₹)?
38. 38.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
39. 39.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
40. 40.The price of a school bag changes from ₹1220 to ₹1464. By what percent did it go up?

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