document.write( "Question 813152: A local bus departs every 20 minutes. An express bus departs every 5/4 hours. If they depart together at 6:00 A.M., at what time will they next depart at the same time? \n" ); document.write( "
Algebra.Com's Answer #489512 by josmiceli(19441)\"\" \"About 
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There is a certain number of 1/3 hr intervals that
\n" ); document.write( "add up to some other number of 5/4 hr intervals.
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\n" ); document.write( "Expressed as an equation:
\n" ); document.write( "\"+a%2A%281%2F3%29+=+b%2A%285%2F4%29+\"
\n" ); document.write( "where \"a\" and \"b\" are whole numbers
\n" ); document.write( "\"+a%2Fb+=+%285%2F4%29+%2F+%281%2F3%29+\"
\n" ); document.write( "\"+a%2Fb+=+15%2F4+\"
\n" ); document.write( "---------------
\n" ); document.write( "It looks like there are 15 local bus arrivals
\n" ); document.write( "and 4 express bus arrivals and the last ones
\n" ); document.write( "happen at the same time
\n" ); document.write( "\"+15%2A%281%2F3%29+=+5+\"
\n" ); document.write( "and
\n" ); document.write( "\"+4%2A%285%2F4%29+=+5+\"
\n" ); document.write( "So, in 5 hrs they depart at the same time
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