document.write( "Question 41407: At 9:00 a.m. a truck leaves the truck yard and travels west at a rate of 45 mi/hr. Two hours later, a second truck leaves along the same route, traveling at 55 mi/hr. When will the second truck catch up to the first? \r
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Algebra.Com's Answer #26715 by rajagopalan(174)\"\" \"About 
You can put this solution on YOUR website!
start time of truck 1 = 9
\n" ); document.write( "start time of truck 2 = 11
\n" ); document.write( "Position of truck 1 at 11 am = 45*2 = 90 km apart
\n" ); document.write( "speed of truck 2 =55
\n" ); document.write( "speed of truck 1 =45
\n" ); document.write( "Apprach velocity = 55-45 = 10 mph
\n" ); document.write( "So to cover 90 miles time needed = 90/10=9 hours
\n" ); document.write( "Second truck will catch up / overtake 1st truck at 11+9 = 20 hours
\n" ); document.write( "or (08:00 pm)on the same day.
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