document.write( "Question 459216: 2 h and 30 mins to fill a swimming pool using 2 hose pipes,how long will it take nina to fill the pool if she uses 3 \n" ); document.write( "

Algebra.Com's Answer #314947 by josmiceli(19441) $\"\"$ $\"About$

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I assume they all fill at the same rate
\n" ); document.write( "which is: (.5 pool filled) / (2.5 hrs)
\n" ); document.write( "(note that each hose can fill 1/2 pool in 2.5 hrs)
\n" ); document.write( "Now add the rates to find time, $\"t\"$ for 3 hoses
\n" ); document.write( " $\"+.5%2F2.5+%2B+.5%2F2.5+%2B+.5%2F2.5+=+1%2Ft+\"$
\n" ); document.write( " $\"+1%2F5+%2B+1%2F5+%2B+1%2F5+=+1%2Ft+\"$
\n" ); document.write( " $\"+3%2A%281%2F5%29+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"5t\"$
\n" ); document.write( " $\"+3t+=+5+\"$
\n" ); document.write( " $\"+t+=+3%2F5+\"$ hr
\n" ); document.write( " $\"+t+=+%283%2F5%29%2A60+=+36+\"$ min
\n" ); document.write( "It takes 36 min to fill the pool with 3 hoses
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