Ships
The red ship begins its circuit every 30 minutes. The blue boat begins its circuit every 45 minutes. Both ships begin their sightseeing circuit in the same place at the same time, always at 10:00 o'clock.
a / What time does the boat meet again?
b / How many times a day sail from a port at the same time when at 19:00 o'clock both ships end?
Result
a / What time does the boat meet again?
b / How many times a day sail from a port at the same time when at 19:00 o'clock both ships end?
Result
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