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Find the time when a target amount is reached

Year 9 maths · Fieldbook Learning

Name ______________________ Date __________

Write an equation: starting amount plus rate times time equals the target. Solve for time.

  1. A hiker is 32 km from camp and walks toward it at 4 km every hour. After how many hours are there 4 km?
  2. A jar holds 40 coins and 4 more coins are added each week. After how many weeks are there 60 coins?
  3. A candle is 28 cm tall and burns down 2 cm every hour. After how many hours are there 14 cm?
  4. A pool holds 27 L of water and a hose adds 6 L every minute. After how many minutes are there 45 L?
  5. A candle is 80 cm tall and burns down 7 cm every hour. After how many hours are there 45 cm?
  6. A jar holds 72 coins and 3 more coins are added each week. After how many weeks are there 96 coins?
  7. A candle is 79 cm tall and burns down 3 cm every hour. After how many hours are there 49 cm?
  8. A pool holds 42 L of water and a hose adds 3 L every minute. After how many minutes are there 69 L?
  9. A candle is 60 cm tall and burns down 3 cm every hour. After how many hours are there 24 cm?
  10. A pool holds 37 L of water and a hose adds 9 L every minute. After how many minutes are there 64 L?
  11. A pool holds 19 L of water and a hose adds 7 L every minute. After how many minutes are there 68 L?
  12. A jar holds 58 coins and 9 more coins are added each week. After how many weeks are there 139 coins?
  13. A hiker is 71 km from camp and walks toward it at 2 km every hour. After how many hours are there 45 km?
  14. A candle is 114 cm tall and burns down 4 cm every hour. After how many hours are there 74 cm?
  15. A pool holds 53 L of water and a hose adds 2 L every minute. After how many minutes are there 61 L?
  16. A hiker is 113 km from camp and walks toward it at 8 km every hour. After how many hours are there 41 km?
  17. A jar holds 83 coins and 2 more coins are added each week. After how many weeks are there 103 coins?
  18. A candle is 166 cm tall and burns down 2 cm every hour. After how many hours are there 154 cm?
  19. A candle is 134 cm tall and burns down 3 cm every hour. After how many hours are there 92 cm?
  20. A pool holds 130 L of water and a hose adds 8 L every minute. After how many minutes are there 266 L?
More free practice: fieldbooklearning.com/uk/practice/year-9/find-the-time-when-a-target-amount-is-reached/

Play it as a quiz game

20 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

  1. Download the game's own question template: in Kahoot, Add question → Import spreadsheet; in Blooket, Create a set → Spreadsheet import.
  2. Click the matching button below, then click the first empty question row of the template and paste.
  3. Save the template (Kahoot needs .xlsx, Blooket .csv) and upload it.
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Answer key: Find the time when a target amount is reached

  1. 7
  2. 5
  3. 7
  4. 3
  5. 5
  6. 8
  7. 10
  8. 9
  9. 12
  10. 3
  11. 7
  12. 9
  13. 13
  14. 10
  15. 4
  16. 9
  17. 10
  18. 6
  19. 14
  20. 17