document.write( "Question 1163732: Allison drove home at 62 mph, but her brother Austin , who left at the same time , could drive at only 42 mph. When Allison arrived , Austin still had 40 miles to go, How fat did Allison drive ? \n" ); document.write( "

Algebra.Com's Answer #787916 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Allison drove home at 62 mph, but her brother Austin, who left at the same time , could drive at only 42 mph.
\n" ); document.write( " When Allison arrived , Austin still had 40 miles to go,
\n" ); document.write( " How far did Allison drive ?
\n" ); document.write( ":
\n" ); document.write( "let d = distance A drove (home)
\n" ); document.write( "time = d/speed
\n" ); document.write( ":
\n" ); document.write( " $\"d%2F62\"$ = $\"%28d-40%29%2F42\"$
\n" ); document.write( "cross multiply
\n" ); document.write( "62(d-40) = 42d
\n" ); document.write( "62d - 2480 = 42d
\n" ); document.write( "62d - 42d = 2480
\n" ); document.write( "20d = 2480
\n" ); document.write( "d = 2480
\n" ); document.write( "d = 124 mi the dist A drove home
\n" ); document.write( " \n" ); document.write( "

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