document.write( "Question 834618: pen is jogging in a speed of 4 km/h. half an hour later, jeff started following him in a speed of 8.5 km/h. how long it's gonna take jeff to catch pen ? \n" ); document.write( "
Algebra.Com's Answer #503096 by richwmiller(17219)\"\" \"About 
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In that half an hour, pen went 2 miles.
\n" ); document.write( "Jeff will take 2/8.5 =.24 hours or about 11 minutes to catch pen.
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