Answer:
Weekly economic earning = $1400
Explanation:
Below is the calculation of weekly economic rent:
Given the earn at the parking lot = $300/day
Earning as a campground = $500/ day
Now, in order to find the economic rent just subtract the earning from the parking from the earning of the campground.
Economic earning = 500 - 300
Economic earning = $200
Now, weekly economic earning = $200 x 7
Weekly economic earning = $1400