Sarah owns a small business. There was a loss of $19 on Thursday and a loss of $12 on Friday. On Saturday there was a loss of $11, and on Sunday there was a profit of $15. Find the total profit or loss for the four days.

The total loss for the first three days is $19 + $12 + $11 = $42.

The total profit or loss for the four days is $42 + $15 = -$27.
Therefore, the total is a loss of $27.