Sobeys Sells Fruit Trays Consisting of Pineapple and Melons

Multiple Choice

Sobeys sells fruit trays consisting of pineapple and melons. The manager of the fruit department obtains pineapples at a wholesale price of $2.50 per kg, and melons at $1.85 per kg. He is required to produce 10 kg of the mixed fruit. What is the maximum weight of pineapple that he can put in the mix in order to have an effective wholesale cost no greater than $2.00 per kg?

A) 2.31 kg
B) 7.69 kg
C) 4.56 kg
D) 4 kg
E) 5.41 kg