document.write( "Question 847757: a small air conditioner will cool a room 2 degrees in 15 min. a larger air conditioner will cool the room 2 degrees in 10 min. how long would it take to cool the room 2 degrees with both air conditioners running? \n" ); document.write( "

Algebra.Com's Answer #510767 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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a small air conditioner will cool a room 2 degrees in 15 min.
\n" ); document.write( " a larger air conditioner will cool the room 2 degrees in 10 min.
\n" ); document.write( " how long would it take to cool the room 2 degrees with both air conditioners running?
\n" ); document.write( ":
\n" ); document.write( "let t = time required for both a/c units to lower the tem;
\n" ); document.write( "let the completed job = 1; lowering the temp 2 degrees
\n" ); document.write( ":
\n" ); document.write( "A shared work equation
\n" ); document.write( " $\"t%2F15\"$ + $\"t%2F10\"$ = 1
\n" ); document.write( "mulitply by 30 to clear the denominators, results
\n" ); document.write( "2t + 3t = 30
\n" ); document.write( "5t = 30
\n" ); document.write( "t = 30/5
\n" ); document.write( "t = 6 min when both work together \n" ); document.write( "

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