document.write( "Question 623439: Full tank with 3 one inch holes drains in 7.2 hours. Same size tank full has 7 one inch holes, how long will it take to drain? \n" ); document.write( "

Algebra.Com's Answer #392146 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Full tank with 3 one inch holes drains in 7.2 hours.
\n" ); document.write( " Same size tank full has 7 one inch holes, how long will it take to drain?
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\n" ); document.write( "Let t = time to drain with 7 holes
\n" ); document.write( ":
\n" ); document.write( "Inverse variation equation (the greater the number holes, the less time)
\n" ); document.write( " $\"3%2F7\"$ = $\"t%2F7.2\"$
\n" ); document.write( "Cross multiply
\n" ); document.write( "7t = 3 * 7.2
\n" ); document.write( "7t = 21.6
\n" ); document.write( "t = $\"21.6%2F7\"$
\n" ); document.write( "t = 3.1 hrs \n" ); document.write( "

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