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All members of our painting team paint at the same rate.  If $10$ members can paint a $1000$ square foot wall in $10$ minutes, then how long would it take for $5$ members to paint a $1000$ square foot wall, in minutes?

 Dec 14, 2023
 #1
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Each member   must paint    1000 / (10 * 10)  =  1000 / 100  =  10sq ft per minute

 

So......5 members take

 

1000 / ( 5 * 10)  =   1000 / 50  =   20 min

 

Another way to see this is that 5 members must take  twice as long as  10 members !!!!

 

cool cool cool

 Dec 15, 2023

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