Three ounces of cinnamon cost 2.40. if there are 16 ounces in 1 pound, how much does cinnamon cost per pound?

To find how much cinnamon per pound you first divide the $2.40 by the 3 oz to find how much per ounce...so $2.40/3 = 80 cents. Then u multiply that by the 16 oz to get the amount for 1 pound...so .80x16= $12.80 per pound.
Hope it helps!