To find out unit price, we must put the money over the amount and divide the money by what the amount is.
(The reason I go over two digits for the price is because the two digits are the same.)
1. 3.99/16 = 0.2494/1
The unit price is about $0.2494 for an ounce.
2. 2.99/12 = 0.2492/1
The unit price is about $0.2492 for an ounce.
The $2.99 for 12 ounces is the best price, but only by a little.