document.write( "Question 918999: If it takes 3 minutes to fill 4/5 of a tub how much longer will it take to fill the rest? \n" ); document.write( "

Algebra.Com's Answer #557381 by josmiceli(19441) $\"\"$ $\"About$

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There is $\"+1+-+4%2F5+=+1%2F5+\"$ of the tub left to fill
\n" ); document.write( "---------
\n" ); document.write( "The rate of filling stays the same, so
\n" ); document.write( "rate = $\"+%28%28+4%2F5+%29%29+%2F+3+\"$
\n" ); document.write( "and, also
\n" ); document.write( "rate = $\"+%28%28+1%2F5%29%29+%2F+t+\"$
\n" ); document.write( "so, I can say:
\n" ); document.write( " $\"+%28%284%2F5%29%29%2F3+=+%28%281%2F5%29%29%2Ft+\"$
\n" ); document.write( " $\"+%284%2F5%29%2At+=+%281%2F5%29%2A3+\"$
\n" ); document.write( " $\"+4t+=+3+\"$
\n" ); document.write( " $\"+t+=+3%2F4+\"$
\n" ); document.write( "It takes 3/4 of a minute to fill the rest
\n" ); document.write( "check:
\n" ); document.write( "I can now say that the rate is:
\n" ); document.write( " $\"+%28%28+4%2F5+%2B+1%2F5+%29%29+%2F+%28%28+3+%2B+3%2F4+%29%29+=+%28%28+4%2F5+%29%29+%2F+3+\"$
\n" ); document.write( "This is just ( rate ) = ( rate )
\n" ); document.write( " $\"+1+%2F+%28%28+15%2F4+%29%29+=+4%2F15+\"$
\n" ); document.write( " $\"+4%2F15+=+4%2F15+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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