document.write( "Question 1133365: two cars leave the same place at the same time traveling in the same direction for 3 hours. the first car travels twice as fast as the second car. how fast is the second car traveling if they are 90 miles apart when they stop? \n" ); document.write( "
Algebra.Com's Answer #750561 by ankor@dixie-net.com(22740)\"\" \"About 
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two cars leave the same place at the same time traveling in the same direction for 3 hours.
\n" ); document.write( " the first car travels twice as fast as the second car.
\n" ); document.write( " how fast is the second car traveling if they are 90 miles apart when they stop?
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\n" ); document.write( "let s = speed of the 2nd car
\n" ); document.write( "then
\n" ); document.write( "2s = speed of the 1st
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\n" ); document.write( "write a distance equation, dist = speed * time
\n" ); document.write( "1st dist - 2nd car dist = 90 mi
\n" ); document.write( "2s(3) - s(3) = 90
\n" ); document.write( "simplify, divide equation by 3
\n" ); document.write( "2s - s = 30
\n" ); document.write( "s = 30 mph is speed of the 2nd car
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\n" ); document.write( "Check this: find the actual distances each travels
\n" ); document.write( "60 * 3 = 180 mi for the 1st car
\n" ); document.write( "30 * 3 = 90 mi for the 2nd
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\n" ); document.write( "difference: 90 mi\r
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