Zack is a plumber, and his coworker Vince is an electrician. Zack charges customers a fee of $84 just to come to their houses and then $1 per minute that he is there. Vince also charges a fee of $40 for a home visit, plus an additional $2 per minute. Last week the coworkers went to a job site together, spent the same amount of time working, and earned the same amount. How much did each one earn? How much time did each one spend working?