4.(0, 5, or 10)GMO-free soybeans cost about $2 per bushel more than GMO soybeans.

a) How many hours does someone have to work to pay that premium ($2) in the United States, where average wages are about $25 per hour?

b) How many hours does someone have to work to pay that premium ($2) in those African nations where average wages are about 25centsper hour?

c) Are attitudes towards GMO-free crops likely to be different in Africa and the United States?