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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 910 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.The price of a school bag changes from ₹460 to ₹414. By what percent did it come down?
  2. 2.A water tank holds 480 litres. 10% of the water is used. How many litres are left?
  3. 3.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
  4. 4.A shop sells 4960 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹1400 to ₹1680. By what percent did it go up?
  6. 6.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹4700 to ₹4465. By what percent did it come down?
  8. 8.A shop sells 300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A water tank holds 4680 litres. 10% of the water is used. How many litres are left?
  10. 10.A water tank holds 4600 litres. 25% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹940. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A town has 4260 people. Its population grows by 20%. How many people live there now?
  13. 13.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹3560. It goes up by 20%. What is the new price (in ₹)?
  15. 15.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  16. 16.A shop sells 140 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹4980 to ₹5229. By what percent did it go up?
  18. 18.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹1200 to ₹1020. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹380 to ₹475. By what percent did it go up?
  21. 21.A water tank holds 4280 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a bicycle is ₹3220. It goes up by 40%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹400 to ₹440. By what percent did it go up?
  24. 24.A water tank holds 2200 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹4060. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A water tank holds 2420 litres. 40% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹2260 to ₹1582. By what percent did it come down?
  28. 28.A shop sells 3220 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A shop sells 620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  30. 30.A water tank holds 3320 litres. 30% of the water is used. How many litres are left?
  31. 31.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  32. 32.A water tank holds 4460 litres. 20% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹2960 to ₹3108. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4500 to ₹3150. By what percent did it come down?
  35. 35.A shop sells 1940 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  36. 36.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A shop sells 4640 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹2520 to ₹2142. By what percent did it come down?
  39. 39.The price of a bicycle is ₹620. It goes up by 5%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹4000 to ₹4600. By what percent did it go up?

Answer key

  1. 10
  2. 432
  3. 2346
  4. 6944
  5. 20
  6. 47.5
  7. 5
  8. 390
  9. 4212
  10. 3450
  11. 1222
  12. 5112
  13. 32.5
  14. 4272
  15. 26
  16. 196
  17. 5
  18. 14.5
  19. 15
  20. 25
  21. 3852
  22. 4508
  23. 10
  24. 1320
  25. 5278
  26. 1452
  27. 30
  28. 4025
  29. 930
  30. 2324
  31. 12.5
  32. 3568
  33. 5
  34. 30
  35. 2425
  36. 69
  37. 5104
  38. 15
  39. 651
  40. 15

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