document.write( "Question 365863: A car is traveling 90 mph slower than a plane. If it takes the car 6 hours longer to cover the same distance than the plane in 3 hours, how fast is the plane going? \n" ); document.write( "
Algebra.Com's Answer #260761 by Alan3354(69443)\"\" \"About 
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A car is traveling 90 mph slower than a plane. If it takes the car 6 hours longer to cover the same distance than the plane in 3 hours, how fast is the plane going?
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\n" ); document.write( "The car takes 9 hours for the plane's 3 hours, so the plane is 3 times as fast.
\n" ); document.write( "c = car's speed
\n" ); document.write( "3c = c+90
\n" ); document.write( "c = 45
\n" ); document.write( "plane's speed = 135 mph\r
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