document.write( "Question 887301: A train runs for 2 hours at speed of 40 km/hr. It run for 4 1/2 hour at speed of 60 km/hr, and then run's for 3 1/2 hours at speed of 70 km/hr. Find the average speed of train? \n" ); document.write( "
Algebra.Com's Answer #536511 by Alan3354(69443)\"\" \"About 
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Find the total distance.
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