Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 205 · 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 15% and then goes up by 40% more. By what percent has it gone up in all? =
2. 2.The price of a school bag changes from ₹1360 to ₹1904. By what percent did it go up?
3. 3.The price of a school bag changes from ₹4860 to ₹4374. By what percent did it come down?
4. 4.A water tank holds 2020 litres. 30% of the water is used. How many litres are left?
5. 5.A shop sells 720 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
6. 6.A town has 1260 people. Its population grows by 5%. How many people live there now?
7. 7.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
8. 8.A water tank holds 2960 litres. 25% of the water is used. How many litres are left?
9. 9.A shop sells 3780 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
10. 10.A shop sells 3240 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
11. 11.A water tank holds 2160 litres. 10% of the water is used. How many litres are left?
12. 12.The price of a bicycle is ₹3020. It goes up by 20%. What is the new price (in ₹)?
13. 13.A water tank holds 3840 litres. 20% of the water is used. How many litres are left?
14. 14.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
15. 15.The price of a school bag changes from ₹3000 to ₹2850. By what percent did it come down?
16. 16.The price of a bicycle is ₹1840. It goes up by 20%. What is the new price (in ₹)?
17. 17.The price of a bicycle is ₹840. It goes up by 30%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹4640 to ₹6960. By what percent did it go up?
19. 19.The price of a school bag changes from ₹2380 to ₹2499. By what percent did it go up?
20. 20.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
21. 21.A shop sells 3840 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
22. 22.A water tank holds 1700 litres. 5% of the water is used. How many litres are left?
23. 23.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
24. 24.The price of a bicycle is ₹420. It goes up by 15%. What is the new price (in ₹)?
25. 25.A shop sells 4760 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
26. 26.The price of a bicycle is ₹1340. It goes up by 10%. What is the new price (in ₹)?
27. 27.A shop sells 1880 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
28. 28.The price of a school bag changes from ₹160 to ₹168. By what percent did it go up?
29. 29.The price of a bicycle is ₹4600. It goes up by 25%. What is the new price (in ₹)?
30. 30.A water tank holds 1000 litres. 10% of the water is used. How many litres are left?
31. 31.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
32. 32.A town has 3560 people. Its population grows by 15%. How many people live there now?
33. 33.The price of a school bag changes from ₹1200 to ₹1500. By what percent did it go up?
34. 34.A water tank holds 2280 litres. 30% of the water is used. How many litres are left?
35. 35.A shop sells 2080 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
36. 36.A shop sells 860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
37. 37.A water tank holds 4680 litres. 5% of the water is used. How many litres are left?
38. 38.The price of a bicycle is ₹1180. It goes up by 40%. What is the new price (in ₹)?
39. 39.A shop sells 1420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
40. 40.A shop sells 1900 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

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