Concept explainers
To Find: The weekly charge and the charge for each mile driven in the given situation
Answer to Problem 17P
Weekly charge = $120
And Charge per mile = $0.25
Explanation of Solution
Given Information: It is given that the company charges a fixed weekly rental charge plus a charge for each mile
And a one week trip of 520miles costs $250
And a two week trip of 800 miles costs $440
Calculation:
Let the weekly rental charge = $ x
And they charge for each mile = $ y
Now according to the question
The rental charge for a one week trip = $ x
And the charge for 520 miles = $ 520y
And the total cost for one week trip is $250
That is,
Now the rental charge for two-week trip = $ 2x
And the charge for 800 miles = $ 800y
And the total cost for the two-week trip is $440
That is,
Multiplying (1) by 2 and subtracting from (2), we have
Or
Now putting this value in (1), we have
Or
Chapter 3 Solutions
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