document.write( "Question 216024: A plane averaging 120 mph and an express train averaging 60 mph depart at the same time from the same city headed for the same destination. If the train arrives 45 minutes later then how far did they each travel \n" ); document.write( "
Algebra.Com's Answer #163208 by ankor@dixie-net.com(22740)\"\" \"About 
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A plane averaging 120 mph and an express train averaging 60 mph depart at the
\n" ); document.write( "same time from the same city headed for the same destination.
\n" ); document.write( "If the train arrives 45 minutes later then how far did they each travel
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\n" ); document.write( "Find the travel times of the plane and the train
\n" ); document.write( "convert 45 min .75 hr
\n" ); document.write( ":
\n" ); document.write( "Let t = travel time of the plane
\n" ); document.write( "then
\n" ); document.write( "(t+.75) = travel time of the train
\n" ); document.write( ":
\n" ); document.write( "They traveled the same dist. Write a dist equation Dist = speed * time
\n" ); document.write( "120t = 60(t+.75)
\n" ); document.write( "120t = 60t + 45
\n" ); document.write( "120t - 60t = 45
\n" ); document.write( "60t = 45
\n" ); document.write( "t = \"45%2F60\"
\n" ); document.write( "t = .75 hrs is the travel time of the plane
\n" ); document.write( "then
\n" ); document.write( ".75 + .75 = 1.5 hr is the travel time of the train
\n" ); document.write( ":
\n" ); document.write( "Find the dist
\n" ); document.write( "120 * .75 = 90 mi
\n" ); document.write( ":
\n" ); document.write( "confirm using the train
\n" ); document.write( "60 * 1.5 = 90 mi \n" ); document.write( "
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