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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 780 · 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 ₹1400 to ₹1960. By what percent did it go up?
  2. 2.A shop sells 2900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  3. 3.A water tank holds 1620 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 3320 litres. 20% of the water is used. How many litres are left?
  5. 5.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 2200 litres. 25% of the water is used. How many litres are left?
  7. 7.A water tank holds 2220 litres. 50% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹280. It goes up by 5%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3420 to ₹4275. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹1260 to ₹1764. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹2100 to ₹2310. By what percent did it go up?
  12. 12.A shop sells 1240 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹4180 to ₹5016. By what percent did it go up?
  14. 14.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 300 litres. 5% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹3220 to ₹4830. By what percent did it go up?
  17. 17.A town has 2840 people. Its population grows by 40%. How many people live there now?
  18. 18.A water tank holds 4840 litres. 5% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹2360 to ₹2950. By what percent did it go up?
  20. 20.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹380 to ₹456. By what percent did it go up?
  22. 22.A water tank holds 940 litres. 20% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4340 to ₹5425. By what percent did it go up?
  24. 24.A town has 580 people. Its population grows by 5%. How many people live there now?
  25. 25.A town has 2320 people. Its population grows by 50%. How many people live there now?
  26. 26.A town has 3080 people. Its population grows by 15%. How many people live there now?
  27. 27.A water tank holds 4720 litres. 20% of the water is used. How many litres are left?
  28. 28.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  29. 29.A town has 1940 people. Its population grows by 40%. How many people live there now?
  30. 30.A water tank holds 2560 litres. 30% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹2100. It goes up by 15%. What is the new price (in ₹)?
  32. 32.A water tank holds 1380 litres. 25% of the water is used. How many litres are left?
  33. 33.A water tank holds 3040 litres. 25% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹4220 to ₹6330. By what percent did it go up?
  35. 35.A town has 3520 people. Its population grows by 40%. How many people live there now?
  36. 36.The price of a bicycle is ₹3540. It goes up by 5%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹2720 to ₹3400. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹3000 to ₹1500. By what percent did it come down?
  39. 39.The price of a bicycle is ₹4160. It goes up by 30%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹4940 to ₹2964. By what percent did it come down?

Answer key

  1. 40
  2. 4350
  3. 1539
  4. 2656
  5. 49.5
  6. 1650
  7. 1110
  8. 294
  9. 25
  10. 40
  11. 10
  12. 1426
  13. 20
  14. 15.5
  15. 285
  16. 50
  17. 3976
  18. 4598
  19. 25
  20. 36.5
  21. 20
  22. 752
  23. 25
  24. 609
  25. 3480
  26. 3542
  27. 3776
  28. 19
  29. 2716
  30. 1792
  31. 2415
  32. 1035
  33. 2280
  34. 50
  35. 4928
  36. 3717
  37. 25
  38. 50
  39. 5408
  40. 40

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