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All members of our painting team paint at the same rate.  If $10$ members can paint a $100$ square foot wall in $10$ minutes, then how long would it take the $15$ members to paint a $100$ square foot wall, in minutes?

 Dec 14, 2023
 #1
avatar+126978 
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Each member paints   100 / (10 * 10)   =  1 sq ft per minute

 

So  15 will paint 15 sq ft in a minute

 

So  15 will take

 

100 / 15  =   20 / 3   =     6 + 2/3 min  =   6 min 40sec

 

 

cool cool cool

 Dec 15, 2023

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