
Here is an example train timetable and a ticket card side by side. The card says: Train ticket €18, 20% early-bird off if you arrive before 12:00. One problem today will use both. First, the elapsed time: the 09:00 train from Cork takes 2 hours 35 minutes. What time do we arrive?
Watch an example timetable for the Cork to Dublin Irish Rail route on the board. Next to it is our ticket card: €18 ticket, 20% early-bird off if you arrive before 12:00. We will resolve one clue, then use its answer inside the next clue. First: which service leaves and arrives, and how long is the journey? Then we check the arrival time against the card and knock the sale off the fare.
Today we work through this clue chain together on the board. First, find the arrival time of the 09:00 service into Heuston. The timetable prints the arrival, so read it off, then count up to confirm the 2h 35m journey. Next, check that arrival time against our card on the board: arrive before 12:00 = 20% off. Then take the €18 fare, knock the 20% off, and work out the change from €20. We name each carried-forward number aloud before we use it.
In your maths copy, work each clue in turn. Show your time calculation, then your money working, and carry the answer forward to the next clue. Draw a short line between clues so it is clear which number you passed on.
Today we crack a five-clue mystery together. Keep every answer ready, you may need an earlier one again:
For this challenge: tickets used before 18:00 get 20% off (early-bird fare). Say each carried number aloud before you use it.
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