All members of our painting team paint at the same rate. If $45$ members can paint a specific wall in $60$ minutes, then how long would it take $12$ members to paint the same wall, in minutes?
It would take 1 hour for each member if there are 45 members to paint a wall, so it's 45 hours in total.
Let x represent how many hours 12 members need to paint the same wall.
12x=45×1
x=4512=154hrs
In minutes, it would be 3×154=225 minutes.