Alright, so I am assuming the average weight of one watermelon is 12 5/8 pounds. So what you need to do is multiply the average weight of a watermelon by how many there are. When you do so you will get the answer. If you are having trouble with fractions, convert it to a decimal. For example, 12 5/8 is the same as 12.625. When you do this, the answer is c.