document.write( "Question 725185: Two dog teams racing the last 77 miles.Team B leaves 13 minutes after Team A.Team A is doing 7 mph.how fast does team B go to pass and get to finish line first. \n" ); document.write( "
Algebra.Com's Answer #444057 by josmiceli(19441)\"\" \"About 
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Team B needs to go faster than a speed that will
\n" ); document.write( "give them a tie right at the finish line
\n" ); document.write( "Team A has a head start of
\n" ); document.write( "\"+7%2A%2813%2F60%29+=+1.51667+\"
\n" ); document.write( "Let \"+t+\" = the time for them both to meet
\n" ); document.write( "at the finish line after B leaves
\n" ); document.write( "Let \"+s+\" = B's speed in mi/hr
\n" ); document.write( "--------------------------
\n" ); document.write( "A's equation:
\n" ); document.write( "(1) \"+77+-+1.51667+=+7t+\"
\n" ); document.write( "B's equation:
\n" ); document.write( "(2) \"+77+=+s%2At+\"
\n" ); document.write( "---------------
\n" ); document.write( "(1) \"+7t+=+75.48333+\"
\n" ); document.write( "(1) \"+t+=+10.78333+\"
\n" ); document.write( "--------------------
\n" ); document.write( "(2) \"+s+=+77%2Ft+\"
\n" ); document.write( "(2) \"+s+=+77%2F10.78333+\"
\n" ); document.write( "(2) \"+s+=+7.14065+\"
\n" ); document.write( "Team B needs to go faster than 7.14065 mi/hr
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+77+-+1.51667+=+7%2A10.78333+\"
\n" ); document.write( "(1) \"+75.48333+=+75.48333+\"
\n" ); document.write( "OK
\n" ); document.write( "(2) \"+77+=+s%2At+\"
\n" ); document.write( "(2) \"+t+=+77%2F+7.14065+\"
\n" ); document.write( "(2) \"+t+=+10.78333+\"
\n" ); document.write( "OK\r
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