Solution:
a. Sales price per passenger - variable cost per passenger= CMPP
= 50-20= 30
b. contribution margin per passenger/ sales price per passenger= CMR
= 20/50= 40%
c. Total contribution margin= contribution per passenger * passengers.
= 20*14,000= 280,000
TCM - fixed expense= operating income
280,000 -210,000= 70,000