The correct option in this case is as shown below:
C. Renting from both companies will cost the same if Samir drives the truck 50 miles.
What is the total rent cost for each company?
The total rent for each company can be determined as the fixed charge plus the variable charge per mile multiplied by the number of miles covered
Let us determine the number of miles which makes Samir indifferent between the two companies
Company's A cost=135+0.50x
Company's B cost=125+0.70x
135+0.50x=125+0.70x
135-125=0.70x-0.50x
10=0.20x
x=10/0.20
x=50
The costs of both companies are the same at 50 miles, above that the cost of company A is cheaper because it has a lower variable charge per mile of $0.50 compared to B's $0.70
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