We want to find the cost if you want to buy 6 pounds of corn flakes, we will see that the cost is $12.50
We know that a 20 oz of corn flakes costs $2.50.
We want to find the price of 6 pounds of corn flakes.
Remember that:
1lb = 16 oz
Then in 6lb we have 6*(16 oz) = 96 oz
And you can't buy parts of a box (you only can buy complete boxes)
Then you need to buy 5 boxes (for a total of 100 oz).
The cost would be:
5*$2.50 = $12.50
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