+145 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?
+20 well, since they paint 1000 sq ft in 10 minutes, the individual work rate is 10 sq ft per minute.
plug that into the second equation, and you get 5(members)*10(work rate)*x(time)=1000. so x=20, 20 minutes.
I hope this is right, it seems simple enough 
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