Venture camps, inc., leases the land on which it builds camp sites. venture is considering opening a new site on land that requires $2,500 of rental payment per month. the variable cost of providing service is expected to be $6 per camper. the following chart shows the number of campers venture expects for the first year of operation of the new site:

jan. feb. mar. apr. may june july aug. sept. oct. nov. dec. total
120 250 200 200 300 500 650 650 350 380 100 300 4,000
required:
assuming that venture wants to earn $5.50 per camper, determine the price it should charge for a camp site in february and august. (do not round intermediate calculations.)

i got $21.50 for feb and $15.50 for aug which is apparently incorrect even though i did the math:

$21.50 x 250 = 53750

- 2500

= 2875

6*250 = - 1500

= 1375 / 250

= 5.5