document.write( "Question 398820: A plane on a search mission flew east from an airport, turned, and flew west back to the airport. the plance cruised at 300 km/h when byling east, and 400 km/h when flying west. the plane was in the air for 7 hours. how far from the airport did the plane travel? \n" ); document.write( "
Algebra.Com's Answer #282542 by ankor@dixie-net.com(22740)\"\" \"About 
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A plane on a search mission flew east from an airport, turned, and flew west back to the airport.
\n" ); document.write( " the plane cruised at 300 km/h when byling east, and 400 km/h when flying west.
\n" ); document.write( " the plane was in the air for 7 hours. how far from the airport did the plane travel?
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\n" ); document.write( "let d = distance he flew from the airport
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\n" ); document.write( "Write a time equation: Time = dist/speed
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\n" ); document.write( "\"d%2F300\" + \"d%2F400\" = 7
\n" ); document.write( "Multiply by 1200 to get rid of the denominators
\n" ); document.write( "1200*\"d%2F300\" + 1200*\"d%2F400\" = 7(1200)
\n" ); document.write( "4d + 3d = 8400
\n" ); document.write( "7d = 8400
\n" ); document.write( "d = \"8400%2F7\"
\n" ); document.write( "d = 1200 miles
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