document.write( "Question 364820: Two Buses leave Atlanta at the same time, one traveling west at 40 mph and the other traveling north at 30 mph. When will they be 400 miles apart? \n" ); document.write( "
Algebra.Com's Answer #260095 by robertb(5830)\"\" \"About 
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Let t = the amount of time they'll be 400 miles apart. Then
\n" ); document.write( "\"%2840t%29%5E2+%2B+%2830t%29%5E2+=+400%5E2\", by the Pythagorean theorem.
\n" ); document.write( "\"1600t%5E2+%2B+900t%5E2+=+160000\",
\n" ); document.write( "\"25t%5E2+=+1600\",
\n" ); document.write( "\"t%5E2+=+64\", or t = 8. They will be 400 miles apart after 8 hours.
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