Question

Abby can buy an 8-pound bag of dog food for $740 or a 4-pound bag of the same dog food for $5.38. Which is the better buy?

Answer 1

I am not sure about the numbers in particular the prices!...but...

Explanation:

We can divide the price by the quantity to get the price of a unit amount of dog food and see which options is the one that is more interesting for Abby.

In the first case one pound of dog food will cost:
`740/8=$92.5`
in the second case the price is quite low....buying two bags, to get `8` pounds of dog food, she will pay `2×5.38=$10.76` !!!

I think the prices are not correct....