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16-05-2017
Mathematics

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Jose left the White House and drove toward the recycling plant at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48 km/h. After driving for five hours Rob caught up with Jose. How long did Jose drive before Rob caught up?

Respuesta :

19-05-2017

Let [tex]x[/tex] represent Jose's drived distance and [tex]y[/tex] represent Rob's.
So what you need to do is to solve the equation:
[tex]40x=48*5[/tex]
[tex]40x=240[/tex]
[tex]x=240/40=6[/tex]

So Jose drove for 6 hours before Rob caught him.

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