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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 385 · 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 ₹2520 to ₹3528. By what percent did it go up?
  2. 2.A water tank holds 1460 litres. 25% of the water is used. How many litres are left?
  3. 3.A town has 4720 people. Its population grows by 25%. How many people live there now?
  4. 4.The price of a bicycle is ₹4440. It goes up by 25%. What is the new price (in ₹)?
  5. 5.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 2900 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹240 to ₹288. By what percent did it go up?
  8. 8.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 2500 litres. 25% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹1960 to ₹2744. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹380 to ₹475. By what percent did it go up?
  13. 13.A shop sells 1000 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  14. 14.The price of a school bag changes from ₹3680 to ₹4600. By what percent did it go up?
  15. 15.A town has 4940 people. Its population grows by 30%. How many people live there now?
  16. 16.The price of a school bag changes from ₹1080 to ₹1512. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹2000 to ₹2500. By what percent did it go up?
  18. 18.A shop sells 2440 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.A shop sells 2340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  20. 20.The price of a school bag changes from ₹3720 to ₹5208. By what percent did it go up?
  21. 21.The price of a bicycle is ₹1960. It goes up by 40%. What is the new price (in ₹)?
  22. 22.A shop sells 620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹3240 to ₹3726. By what percent did it go up?
  24. 24.A water tank holds 240 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹4580 to ₹2748. By what percent did it come down?
  26. 26.The price of a bicycle is ₹3780. It goes up by 30%. What is the new price (in ₹)?
  27. 27.A water tank holds 3280 litres. 10% of the water is used. How many litres are left?
  28. 28.A water tank holds 540 litres. 30% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹1540. It goes up by 5%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹1640 to ₹1476. By what percent did it come down?
  31. 31.A shop sells 3340 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 3960 litres. 50% of the water is used. How many litres are left?
  33. 33.A water tank holds 1040 litres. 25% of the water is used. How many litres are left?
  34. 34.A town has 3020 people. Its population grows by 15%. How many people live there now?
  35. 35.The price of a school bag changes from ₹1320 to ₹1254. By what percent did it come down?
  36. 36.A shop sells 1160 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A town has 300 people. Its population grows by 25%. How many people live there now?
  38. 38.The price of a school bag changes from ₹4420 to ₹4199. By what percent did it come down?
  39. 39.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  40. 40.A water tank holds 4420 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 40
  2. 1095
  3. 5900
  4. 5550
  5. 10.25
  6. 2175
  7. 20
  8. 32
  9. 38
  10. 1875
  11. 40
  12. 25
  13. 1250
  14. 25
  15. 6422
  16. 40
  17. 25
  18. 3416
  19. 3042
  20. 40
  21. 2744
  22. 775
  23. 15
  24. 180
  25. 40
  26. 4914
  27. 2952
  28. 378
  29. 1617
  30. 10
  31. 3507
  32. 1980
  33. 780
  34. 3473
  35. 5
  36. 1740
  37. 375
  38. 5
  39. 24
  40. 2652

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