document.write( "Question 328123: At noon, your family starts out from Louisville to go to Memphis driving at 40 mi/h. Your uncle leaves Memphis to come to Louisville two hours later. He is taking the same route and driving at 60 mi/h. The two cities are 380 miles apart. At what time do the cars meet? \n" ); document.write( "

Algebra.Com's Answer #234997 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Rate*Time=Distance.
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\n" ); document.write( "When your uncle leaves, you are already 80 miles away.
\n" ); document.write( "Your distance,
\n" ); document.write( " $\"D1=80%2B40%2At\"$
\n" ); document.write( "Your uncle's distance
\n" ); document.write( " $\"D2=60%2At\"$
\n" ); document.write( "Find $\"t\"$ when $\"D1=D2\"$
\n" ); document.write( " $\"80%2B40t=60t\"$
\n" ); document.write( " $\"20t=80\"$
\n" ); document.write( " $\"t=4\"$ hrs
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\n" ); document.write( "The only check to do is to check how long it would take you to get to Memphis.
\n" ); document.write( "to ensure that you haven't already arrived in Memphis.
\n" ); document.write( " $\"t=D%2FR=380%2F40=9.5\"$ hrs
\n" ); document.write( "Since $\"4%3C9.5\"$ , you are still on the road to Memphis when you uncle catches up.
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