Question

As a valet at the mall, Davis works 6-hour shifts. He earns $6 per hour and keeps 80% of his tip money. How much does Davis need to be tipped so that he takes home exactly $75.00, before taxes are deducted, per shift?

Answer 1

let t = tip amount. you want to write an inequality such that:

number of hours per shift * hourly wage + 80% of t >= 75 and solve for the tip