Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 65 · 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 4700 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 bicycle is ₹2340. It goes up by 5%. What is the new price (in ₹)?
3. 3.The price of a bicycle is ₹3560. It goes up by 10%. What is the new price (in ₹)?
4. 4.The price of a school bag changes from ₹3660 to ₹4026. By what percent did it go up?
5. 5.A water tank holds 1400 litres. 50% of the water is used. How many litres are left?
6. 6.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
7. 7.A town has 2600 people. Its population grows by 50%. How many people live there now?
8. 8.The price of a school bag changes from ₹2000 to ₹1500. By what percent did it come down?
9. 9.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
10. 10.The price of a school bag changes from ₹3420 to ₹2394. By what percent did it come down?
11. 11.A town has 940 people. Its population grows by 5%. How many people live there now?
12. 12.A shop sells 3520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
13. 13.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
14. 14.The price of a bicycle is ₹840. It goes up by 15%. What is the new price (in ₹)?
15. 15.A water tank holds 3460 litres. 50% of the water is used. How many litres are left?
16. 16.A water tank holds 1020 litres. 5% of the water is used. How many litres are left?
17. 17.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
18. 18.A shop sells 220 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
19. 19.The price of a bicycle is ₹3720. It goes up by 20%. What is the new price (in ₹)?
20. 20.A water tank holds 1280 litres. 30% of the water is used. How many litres are left?
21. 21.A water tank holds 4040 litres. 10% of the water is used. How many litres are left?
22. 22.A town has 2840 people. Its population grows by 10%. How many people live there now?
23. 23.The price of a school bag changes from ₹760 to ₹532. By what percent did it come down?
24. 24.A town has 4540 people. Its population grows by 50%. How many people live there now?
25. 25.The price of a school bag changes from ₹160 to ₹96. By what percent did it come down?
26. 26.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
27. 27.The price of a school bag changes from ₹4660 to ₹5359. By what percent did it go up?
28. 28.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
29. 29.A shop sells 3160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
30. 30.A shop sells 2740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
31. 31.A water tank holds 560 litres. 25% of the water is used. How many litres are left?
32. 32.A water tank holds 4140 litres. 5% of the water is used. How many litres are left?
33. 33.A water tank holds 4040 litres. 5% of the water is used. How many litres are left?
34. 34.The price of a school bag changes from ₹3640 to ₹1820. By what percent did it come down?
35. 35.A town has 1080 people. Its population grows by 10%. How many people live there now?
36. 36.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
37. 37.A water tank holds 4420 litres. 30% of the water is used. How many litres are left?
38. 38.The price of a school bag changes from ₹2980 to ₹2682. By what percent did it come down?
39. 39.A water tank holds 3640 litres. 10% of the water is used. How many litres are left?
40. 40.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =

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