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?
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?
This is a special case of a rate x time problem,
so it's possible to take a short cut in this case.
With half as many painters, and with all else equal,
the job would take twice the time. So, 20 minutes
.