###Human: Claire was in charge of passing out free balloons to all the children at the fair.  She started with 50 balloons.  While passing 1 balloon to a little girl, 12 balloons floated away.  Over the next thirty minutes, she gave 9 more away and grabbed the last 11 from her coworker.  How many balloons does Claire have?, ### Assistant: As she gave 1 balloon out, 12 balloons floated away plus she gave away 9 more balloons so she is down 1+12+9 = 22 balloons
She started with 50 and gave/lost 22 balloons so she has 50-22 = 28 balloons
She also took her coworkers last 11 balloons so her new total is 28+11 = 39 balloons 
 So the answer is :  39