Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 875 · 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.The price of a school bag changes from ₹1000 to ₹1100. By what percent did it go up?
2. 2.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
3. 3.A water tank holds 4940 litres. 5% of the water is used. How many litres are left?
4. 4.The price of a bicycle is ₹3660. It goes up by 30%. What is the new price (in ₹)?
5. 5.A water tank holds 3600 litres. 50% of the water is used. How many litres are left?
6. 6.The price of a bicycle is ₹1140. It goes up by 10%. What is the new price (in ₹)?
7. 7.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
8. 8.A shop sells 460 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
9. 9.A shop sells 1800 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
10. 10.The price of a bicycle is ₹1400. It goes up by 15%. What is the new price (in ₹)?
11. 11.A shop sells 1460 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
12. 12.A water tank holds 2160 litres. 20% of the water is used. How many litres are left?
13. 13.A water tank holds 3840 litres. 30% of the water is used. How many litres are left?
14. 14.The price of a school bag changes from ₹780 to ₹741. By what percent did it come down?
15. 15.The price of a bicycle is ₹2200. It goes up by 5%. What is the new price (in ₹)?
16. 16.A water tank holds 2580 litres. 5% of the water is used. How many litres are left?
17. 17.The price of a school bag changes from ₹1480 to ₹1184. By what percent did it come down?
18. 18.A water tank holds 3520 litres. 40% of the water is used. How many litres are left?
19. 19.A shop sells 2420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
20. 20.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
21. 21.A water tank holds 660 litres. 20% of the water is used. How many litres are left?
22. 22.A town has 4820 people. Its population grows by 40%. How many people live there now?
23. 23.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
24. 24.The price of a school bag changes from ₹1820 to ₹2366. By what percent did it go up?
25. 25.A shop sells 4260 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
26. 26.A water tank holds 2280 litres. 50% of the water is used. How many litres are left?
27. 27.A water tank holds 3320 litres. 25% of the water is used. How many litres are left?
28. 28.The price of a school bag changes from ₹4240 to ₹4664. By what percent did it go up?
29. 29.A shop sells 2000 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
30. 30.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
31. 31.A town has 2040 people. Its population grows by 10%. How many people live there now?
32. 32.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
33. 33.A water tank holds 1000 litres. 25% of the water is used. How many litres are left?
34. 34.A water tank holds 3620 litres. 10% of the water is used. How many litres are left?
35. 35.A shop sells 3000 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
36. 36.The price of a school bag changes from ₹1240 to ₹1488. By what percent did it go up?
37. 37.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
38. 38.A water tank holds 4760 litres. 15% of the water is used. How many litres are left?
39. 39.A shop sells 2700 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
40. 40.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =

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