Problem
To spruce up his wardrobe, Jack pays $700 to a tailor in Havana for a regular supply of new pantaloons. The tailor measures Jack and delivers twenty pair of black pants. He next wants to purchase 15 pair of striped pants at the contract rate of $13 per pair. For the black and stripes together, what are the fixed and variable cost of the Havana pantaloons? Jack's discount rate is still 38%.