SOLUTION: Two trains leave Calgary at the same time, but travelling in opposite directions. The first train is travelling at 36km/hr and the second train at 10km/hr. How far apart are the tr

Question 827980: Two trains leave Calgary at the same time, but travelling in opposite directions. The first train is travelling at 36km/hr and the second train at 10km/hr. How far apart are the trains after 90 minutes?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
90 minutes is 1.5 hours.
Let d = distance between them at the specified time period.
Trains going opposite in direction so their distances between is the sum that each goes in that 1.5 hour time.

, using rate*time=distance

km
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