The area of a campground is 1,400 square meters. a tent requires 8 square meters and an rv requires 30 square meters of space. the capacity of the campground is 120 spots, including both tents and rvs. if the cost to camp in a tent is $3.00 and an rv is $9.00, how many rvs should be in the campground to maximize income?

t = number of tents; r = number of RV spots 
This is a linear programming problem. 

Maximize 3t +9r 
Subject to: 
1)..t + r <= 120 
2)..8t + 30r <= 1400 

I wouldn't have thought that you have learned linear programming yet.

You can continue this method to get the final answer.

I hope my answer has come to your help. Thank you for posting your question here in .

6/ 11 = 0.545454 so your answer is55%