Answer:
b. $2,720,000
Explanation:
The contribution margin is what is left after subtracting the variable cost from the sales.
From there, the company pays their fixed cost and the rest is net income.
In this case you have a company desiring to get 720,000 net income after paying their 2,000,000 fixed cost
So we come up with with formula:

Replacing the know values, we get the unknow value. Like it was a solve for X question:

Answer:
$0.37
Explanation:
Depreciable cost = cost of asset - salvage value
$38,800 - $1,800 = $37,000
Depreciable cost per mile = $37,000 / 100,000 = $0.37
Net income ratio .........................