All members of our painting team paint at the same rate. If $20$ members can paint a $2000$ square foot wall in $35$ minutes, then how long would it take the $20$ members to paint a $5000$ square foot wall, in minutes?
35 / 2000 = x / 5000 where x is the number of minutes we are looking for
Cross-multiply
35 * 5000 = 2000 * x divide both sides by 1000
35 * 5 = 2 * x
175 = 2x
x = 175 / 2 = 87.5 minutes
