document.write( "Question 1166391: Willie left the science museum and traveled west at an average speed of 30km/h. Gabriella left two hours later in the opposite direction at an average speed of 35km/h. Find the number of hours Gabriella needs to travel before they are 255km apart \n" ); document.write( "
Algebra.Com's Answer #790897 by Boreal(15235)\"\" \"About 
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The distance apart when Gabriella leaves is 60 km, 2*2Willie's speed.
\n" ); document.write( "They have to be 255 km apart. Their combined speed is 65 km/h in opposite directions
\n" ); document.write( "195/65=3 hours Gabriella has to travel
\n" ); document.write( "in 3 hours goes 105 km.
\n" ); document.write( "W. had gone 5 hours at 30 km/h, and that is 150 km
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