A truck left a station at 6:00am traveling at a rate of 45km/h. A van left the same place 2 hours later heading in the same direction at a rate of 54km/h. At what time will the van catch up with the truck?

6 PM

Step-by-step explanation:

The truck has a 2 hour head start.  It is moving at 45 km/h, so it is 90 km ahead.

If t is the time after 8 AM, then the distance between the truck and the station is:

d = 90 + 45t

The distance between the van and the station is:

d = 54t

When the distances are equal:

54t = 90 + 45t

9t = 90

t = 10

It takes 10 hours after 8 AM for the van to catch up with the truck.  So the time would be 6 PM.

a

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