document.write( "Question 459305: jose left the white house and drove towards the recycling plant an a 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 5 hours rob caught up with jose. how long did jose drive before rob caught up.
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Algebra.Com's Answer #314983 by htmentor(1343)\"\" \"About 
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jose left the white house and drove towards the recycling plant an a 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 5 hours rob caught up with jose. how long did jose drive before rob caught up.
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\n" ); document.write( "Jose has a head start on Rob. Let t = Jose's \"head start\" time
\n" ); document.write( "Since Jose's traveling at 40 mph, the initial separation between them is 40t
\n" ); document.write( "Their relative speeds = 48 - 40 = 8 km/h
\n" ); document.write( "Their separation distance is made up in 5 h.
\n" ); document.write( "So we can write 40t = 8 km/h * 5 h
\n" ); document.write( "Solving for t gives t = 1 hr.
\n" ); document.write( "Therefore, Jose drove a total of 6 hrs.
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