If the labor costs $55,000 for concession staff, $82,500 for security, $45,000 for parking lot operations and $49,000 for ticket/usher operations, what percentage of the labor cost is for concessions and parking lot operations?

43%

Explanation:

Add them all up for x. Then add the concession and parking lot costs for y. Finally divide y/x.

55.07%

Explanation:

In order to solve this you first have to add up all of the cost to calculate the total cost of the things:

Labor cost: $55,000

Concession staff: $82,500

Parking lot operations: $45,000

Ticket/Usher: $49,000

Total: $231,500

Now concessions and parking lot operations amount to a total of: 127,500

We just have to do a rule of three, if 231,500/100=127500/x

x=127,500*100/231500

x=55.07

SO the percentage is 55.07%