Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 368 · 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 30% and then goes up by 10% more. By what percent has it gone up in all? =
2. 2.A shop sells 2500 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
3. 3.The price of a bicycle is ₹1520. It goes up by 25%. What is the new price (in ₹)?
4. 4.The price of a bicycle is ₹1480. It goes up by 40%. What is the new price (in ₹)?
5. 5.The price of a school bag changes from ₹3360 to ₹2520. By what percent did it come down?
6. 6.A water tank holds 4660 litres. 40% of the water is used. How many litres are left?
7. 7.A shop sells 3080 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
8. 8.The price of a school bag changes from ₹2900 to ₹4350. By what percent did it go up?
9. 9.A water tank holds 4240 litres. 20% of the water is used. How many litres are left?
10. 10.A town has 200 people. Its population grows by 20%. How many people live there now?
11. 11.A water tank holds 4280 litres. 20% of the water is used. How many litres are left?
12. 12.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
13. 13.The price of a school bag changes from ₹220 to ₹275. By what percent did it go up?
14. 14.The price of a school bag changes from ₹3220 to ₹1610. By what percent did it come down?
15. 15.A water tank holds 4240 litres. 25% of the water is used. How many litres are left?
16. 16.A water tank holds 3940 litres. 15% of the water is used. How many litres are left?
17. 17.A water tank holds 800 litres. 10% of the water is used. How many litres are left?
18. 18.The price of a bicycle is ₹2120. It goes up by 5%. What is the new price (in ₹)?
19. 19.The price of a bicycle is ₹4460. It goes up by 10%. What is the new price (in ₹)?
20. 20.A shop sells 860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
21. 21.The price of a school bag changes from ₹2780 to ₹2085. By what percent did it come down?
22. 22.A town has 3660 people. Its population grows by 40%. How many people live there now?
23. 23.The price of a bicycle is ₹4960. It goes up by 15%. What is the new price (in ₹)?
24. 24.The price of a school bag changes from ₹2480 to ₹2356. By what percent did it come down?
25. 25.A water tank holds 3120 litres. 15% of the water is used. How many litres are left?
26. 26.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
27. 27.A town has 520 people. Its population grows by 30%. How many people live there now?
28. 28.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
29. 29.A town has 1620 people. Its population grows by 25%. How many people live there now?
30. 30.A shop sells 2620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
31. 31.A water tank holds 2880 litres. 40% of the water is used. How many litres are left?
32. 32.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
33. 33.A town has 2740 people. Its population grows by 10%. How many people live there now?
34. 34.A water tank holds 4320 litres. 50% of the water is used. How many litres are left?
35. 35.A town has 2320 people. Its population grows by 5%. How many people live there now?
36. 36.A water tank holds 540 litres. 25% of the water is used. How many litres are left?
37. 37.The price of a bicycle is ₹3420. It goes up by 15%. What is the new price (in ₹)?
38. 38.The price of a school bag changes from ₹3820 to ₹3247. By what percent did it come down?
39. 39.A shop sells 3140 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
40. 40.A shop sells 1520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

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