Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 476 · 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 320 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
2. 2.The price of a school bag changes from ₹3660 to ₹3477. By what percent did it come down?
3. 3.A town has 4620 people. Its population grows by 15%. How many people live there now?
4. 4.A town has 3680 people. Its population grows by 5%. How many people live there now?
5. 5.A price comes down by 15% 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 ₹4200 to ₹5880. By what percent did it go up?
7. 7.A water tank holds 3320 litres. 10% of the water is used. How many litres are left?
8. 8.The price of a school bag changes from ₹4940 to ₹3705. By what percent did it come down?
9. 9.The price of a bicycle is ₹500. It goes up by 20%. What is the new price (in ₹)?
10. 10.A water tank holds 3540 litres. 50% of the water is used. How many litres are left?
11. 11.A water tank holds 180 litres. 50% of the water is used. How many litres are left?
12. 12.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
13. 13.The price of a bicycle is ₹2640. It goes up by 5%. What is the new price (in ₹)?
14. 14.The price of a school bag changes from ₹720 to ₹828. By what percent did it go up?
15. 15.The price of a bicycle is ₹320. It goes up by 40%. What is the new price (in ₹)?
16. 16.A water tank holds 180 litres. 10% of the water is used. How many litres are left?
17. 17.A water tank holds 3100 litres. 30% of the water is used. How many litres are left?
18. 18.The price of a school bag changes from ₹1160 to ₹696. By what percent did it come down?
19. 19.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
20. 20.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
21. 21.A shop sells 4380 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
22. 22.A water tank holds 2440 litres. 20% of the water is used. How many litres are left?
23. 23.A shop sells 80 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
24. 24.The price of a bicycle is ₹3480. It goes up by 15%. What is the new price (in ₹)?
25. 25.A shop sells 1500 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
26. 26.The price of a school bag changes from ₹900 to ₹1170. By what percent did it go up?
27. 27.The price of a bicycle is ₹3580. It goes up by 30%. What is the new price (in ₹)?
28. 28.The price of a school bag changes from ₹3480 to ₹2958. By what percent did it come down?
29. 29.A town has 2360 people. Its population grows by 40%. How many people live there now?
30. 30.The price of a school bag changes from ₹980 to ₹1078. By what percent did it go up?
31. 31.The price of a bicycle is ₹2720. It goes up by 40%. What is the new price (in ₹)?
32. 32.The price of a school bag changes from ₹100 to ₹125. By what percent did it go up?
33. 33.The price of a school bag changes from ₹3240 to ₹3888. By what percent did it go up?
34. 34.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
35. 35.A shop sells 1580 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
36. 36.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
37. 37.A water tank holds 3800 litres. 30% of the water is used. How many litres are left?
38. 38.A town has 840 people. Its population grows by 50%. How many people live there now?
39. 39.A water tank holds 1640 litres. 30% of the water is used. How many litres are left?
40. 40.The price of a bicycle is ₹1180. It goes up by 10%. What is the new price (in ₹)?

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