If a hen and a half lays a egg and a half for a cent and a hald how much does a dozen cost

A dozen = 12 right? which means that 1/2 which represents the cents times 12 which = 6 cents for a dozen eggs

12 cents because 3/2 hens make 3/2 of an egg for 3/2 cents. Multiplying each part of the equation by 2/3 means you get 1 hen = 1 egg = 1 cent. Since there are twelve eggs in a dozen, you pay 12 cents.