I really need help with this - I am struggling - Thank you

Frances and Latasha are roommates. They spend most of their time studying (of course), but they leave some time for their favorite activities: making pizza and brewing root beer. Frances takes 3 hours to brew a gallon of root beer and 2 hours to make a pizza. Latasha takes 7 hours to brew a gallon of root beer and 5 hours to make a pia. Frances's opportunity cost of making a pizza is V of root beer, and Latasha's opportunity cost of making a pizza is v of root beer. V has an absoiute advantage in making piza, and V has a comparative advantage in making pizza. If Frances and Latasha trade foods with each other, V will trade away pizza in exchange for root beer. The price of pizza can be expressed in terms of gallons of root beer. The highest price at which piza can be traded that would make both roommates better off is V of root beer. and the lowest price that makes both roommates better off is V of root beer per pizza