document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=729575>Question 729575</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bathtub is being filled with water. After 3 minutes, 4/5 of the tub is full.  Assuming the rate is constant, how much longer will it take to fill the bathtub? \r<BR>\n" );
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document.write( "My choices are a.  36 seconds   b. 45 seconds  c.  186 seconds  d.  216 seconds </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446042 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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/cgi-bin/show-face.mpl?user=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=446042\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let t=time required to finish filling the tub<BR>\n" );
document.write( "The tub is being filled at the rate of (4/5)(1/3)=4/15 of the tub per min<BR>\n" );
document.write( "After three minutes, the tub has filled (4/15)*3=4/5 of the tub leaving 1/5 of the tub yet to be filled\r<BR>\n" );
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document.write( "Soooo, our equation to solve is:<BR>\n" );
document.write( "(4/15)*t=1/5<BR>\n" );
document.write( "t=(1/5)/(4/15)  multiply numerator and denominator by (15/4) to get rid of the complex fraction and we get<BR>\n" );
document.write( "t=(1/5)(15/4)/1=15/20=(3/4) min=45 sec\r<BR>\n" );
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document.write( "Hope this helps---ptaylor </SPAN>\n" );
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