Answer:
c. $150.
Explanation:
the extra amount of hours Maurice can work taking a flight will be of 5 hours
(8 hours taking a plane against 3 hours if driving)
As the income per hour is 30 dollar it can generate;
5 hours x $30 per hour = $150
Maurice will only travel by plane if it generates the same or more income than the driving thus, a differencial price of less than 150 dollars will provide Maurice with a net gain. Also we should consider that if Maurice drives his car it is taking a depreication hit per mile while driving that is being ignoer to keep the assignment simple. But considering that the amount of differential income could be higher than $150