document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=845497>Question 845497</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi. I need some help solving this problem please.\r<BR>\n" );
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document.write( "Jack can mow the baseball grounds in 6 hours; Mike can mow the same grounds in 5 hours and Chris can mow the grounds in 4 hours. How long will it take to mow the grounds if all 3 work together? (Leave the answer in improper fraction form)\r<BR>\n" );
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document.write( "This is what I came up with but i'm not too sure:<BR>\n" );
document.write( " 1/6 + 1/5 + 1/4 = 1/t(time)<BR>\n" );
document.write( " 10t + 12t + 15t= 37t<BR>\n" );
document.write( " 37t/37 = 60/37  t=60/37\r<BR>\n" );
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document.write( "Thanks in advance.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #509315 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=509315\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jack can mow the baseball grounds in 6 hours<BR>\n" );
document.write( "Jack rate = 1/6 job/hr<BR>\n" );
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document.write( "Mike can mow the same grounds in 5 hours<BR>\n" );
document.write( "Mike rate = 1/5 job/hr<BR>\n" );
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document.write( " and Chris can mow the grounds in 4 hours.<BR>\n" );
document.write( "Chris rate = 1/4 job/hr<BR>\n" );
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document.write( "Together rate = 1/x job/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate + rate + rate = together rate<BR>\n" );
document.write( "[ 1/6 + 1/5 + 1/4] = 1/x<BR>\n" );
document.write( "x[(5*4 + 6*4+ 6*5)/(6*5*4)] = 1<BR>\n" );
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document.write( "x(74/120) = 1<BR>\n" );
document.write( "x = 120/74 = 1.62 hours = 1 hr 37 min 18 sec<BR>\n" );
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document.write( "Note: Your answer is correct.<BR>\n" );
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