document.write( "Question 831039: Two cars start from the same place traveling in opposite directions one car leaves at noon traveling at 60 mph. The second car leaves at 1:00 traveling at 75 mph. How long will it take until they are 600 miles apart \n" ); document.write( "
Algebra.Com's Answer #501089 by JulietG(1812)\"\" \"About 
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1st hour = Car A travels 60 miles; Car B idle -- 60 miles apart
\n" ); document.write( "2nd hour = Car A travels 60 miles; Car B travels 75 miles -- 195 miles apart
\n" ); document.write( "3rd hour = Car A travels 60 miles; Car B travels 75 miles -- 330 miles apart
\n" ); document.write( "4th hour = Car A travels 60 miles; Car B travels 75 miles -- 465 miles apart
\n" ); document.write( "5th hour = Car A travels 60 miles; Car B travels 75 miles -- 600 miles apart
\n" ); document.write( ".
\n" ); document.write( "In algebraic form, let x be the number of hours
\n" ); document.write( "600 = 60 + (CarA+CarB)(x-1) [because the first hour is only 60]
\n" ); document.write( "Distribute
\n" ); document.write( "600 = 60 + 135x-135
\n" ); document.write( "Subtract 60 from each side
\n" ); document.write( "540 = 135x - 135
\n" ); document.write( "Add 135 to each side
\n" ); document.write( "675 = 135x
\n" ); document.write( "Divide by 135
\n" ); document.write( "5 = x\r
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