document.write( "Question 305442: Pa got in his '29 Ford and started driving west from Jackson at a constant speed of 30 miles per hour. An hour later Ma got in her '31 Buick and started driving west from Jackson at a constant speed. After driving 4 hours Ma had passed Pa and was 10 miles ahead of him. How fast was Ma driving? \n" ); document.write( "

Algebra.Com's Answer #218755 by Fombitz(32388) $\"\"$ $\"About$

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Ma's distance=Pa's distance+Distance he covered in 1 hour+10 miles.
\n" ); document.write( "Distance = Rate*Time
\n" ); document.write( "Let M be Ma's rate,
\n" ); document.write( " $\"M%2A4=30%2A4%2B30%2B10\"$
\n" ); document.write( " $\"M%2A4=120%2B30%2B10\"$
\n" ); document.write( " $\"M%2A4=160\"$
\n" ); document.write( " $\"M=40\"$
\n" ); document.write( "Ma's traveling at 40 mph.
\n" ); document.write( " \n" ); document.write( "

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