Let's start with the patties... The optimal thickness for burgers is about 3/4 of an inch thick (unless your making sliders or mini's which can be made a little thinner). Any thinner than they can tear when you transfer them onto the grill and dry out while being grilled.
The largest percentage of participants in the 2015 MLO salary survey is in the 56-to-65 age group: 41.7%. This is up from 39.7% in the 2014 survey findings.
The pay rate (aka hourly rate) of the worker plus the markup is called the bill rate. Markups can range from 30% to 60%+ with an average in the high thirtieth percentiles across all skill disciplines. Some staffing suppliers promote rates below 30% and, conversely, some services may charge 75% to 100%+ markups.