Continuing the previous problem (the model in part a) one step further, assume that shirts and ties.

Continuing the previous problem (the model in part a) one
step further, assume that shirts and ties are also complementary. Specifically,
assume that each time a shirt is purchased (and is not accompanied by a suit
purchase), 1.3 ties, on average and regardless of the price of ties, are also
purchased. Modify the model from part a of the previous problem to find the
prices of suits, shirts, and ties to maximize overall profit.