Lost money...help?
my coworkers each gave me ten bucks for pizza and I got a coupon online for 5 bucks off...they told me to tip the cook 2 bucks so they could each just get a dollar back and it would be easier to split the change. So if they all paid 9 dollars for the pizza (9x3 is 27) and they gave the cook 2 (27 + 2 is 29) ...now theyre mad because they want to know where did their last dollar go?