Question 1188562
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Roman and Paul are driving on the same highway and both drive at a constant speed. 
Roman drives at 90 km/h and is 30 km ahead of Paul. 
If Paul drives at 100km/h, how long will it take for {{{cross(Pual)}}} <U>Paul</U> to catch Roman?
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<pre>
The initial head start distance is 30 km, and the approaching rate (the relative speed) is  100 - 90 = 10 km/h.


Therefore, it will take  {{{30/10}}} = 3 hours for Paul to catch Roman.
</pre>

Solved.


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For simple Travel & Distance problems, &nbsp;see introductory lessons 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems.lesson>Travel and Distance problems</A>  

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems-for-two-bodies-moving-toward-each-other.lesson>Travel and Distance problems for two bodies moving in opposite directions</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Typical-catching-up-Travel-and-Distance-problems.lesson>Travel and Distance problems for two bodies moving in the same direction (catching up)</A>

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