document.write( "Question 897609: The brands are moving across the country, mr brand leaves 3.5 hours before mrs brand. if he average 80 mph and she average 90 mph, how long will it take mrs brand to over take mr brand? \n" ); document.write( "

Algebra.Com's Answer #544196 by lwsshak3(11628) $\"\"$ $\"About$

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The brands are moving across the country, mr brand leaves 3.5 hours before mrs brand. if he average 80 mph and she average 90 mph, how long will it take mrs brand to over take mr brand?
\n" ); document.write( "***
\n" ); document.write( "let x=amt of time mrs brand overtakes mr brand
\n" ); document.write( "distance=speed*travel time (same for both drivers)
\n" ); document.write( "80(3.5+x)=90x
\n" ); document.write( "280+80x=90x
\n" ); document.write( "10x=280
\n" ); document.write( "x=28
\n" ); document.write( "how long will it take mrs brand to over take mr brand? 28 hrs \n" ); document.write( "

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