$110/$4 per hour = $55/2 hours = 27 and 1/2 hours
Not looking good for poor Jenny.
What is the 7 hours you have in the problem ?
What is that for and what does it have to do with the problem.
I suspect it has something to do with it, based that she is
7 and 1/2 hours short on her work schedule so that she
can make $110