Amy owns a lawn service company, She can complete the work for her client load in 50 hours per week. She decided to take a vacation and while she is out, she hires her friend
Sherry to complete her weekly customer load. Sherry completes the work in 60 hours
that week. When Amy returns from vacation she decided to hire Sherry full time and
they will work together. How long will it now take Amy and Sherry to complete the
client load in one week if they work together?