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Dan 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 Dan. How long did Dan drive before Rob caught up?

Answer :

Dan drove for 6 hours before catching up with Rob who left his home sometime later than Dan.

Dan left the white house and drove toward the recycling plant at an average speed of 40 km/h. Let d1 be Dan's start in km.

Rob left some time later driving in the same direction at an average speed of 48 km/h. Let d2 be rob's start in km.

Let t1 be the time between dan and rob's leaving.

After Rob leaves, Dan travels around 40×5 =200km.

During the same time, rob travels a distance of

48×5=240km

d1= 240-200

= 40 km

t1 = 40/40 = 1

So Dan traveled 1 more hour, which means he traveled for 6 hours.

To know more about average speed visit

https://brainly.com/question/12322912

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