Chad the bodybuilder and his buddies run a moving company. The company employs two types of workers: skinny guys (x) and beefy guys (x). The production function of the company is f(x,x)=x+2x, where x is the number of skinny guys and x is the number of beefy guys. If each skinny guy gets paid $1 and each beefy guy gets paid $3, what is the minimal cost of production of 50 units of output?

Group of answer choices

75

25

50

65

neither one is correct