Question

Lamar bought 20 pounds of dog food for $4.99 for his dog, Buster. The next day, the shop down the street offered 50 pounds of the same brand of dog food for $12.50. Did Lamar get a better deal?

Answer 1

yes... by a penny

Answer 2

First you would need to find the amount per pound Lamar spent on the dog food he bought. In this case you divide the cost ($4.99) by the weight (20 pounds). This comes out to $0.2495/pound. Then you find the same for the 50 pounds of dog food. This comes out to 0.25/pound. So in the terms of cost ratio, Lamar did get a better deal with the original purchase of 20 pounds of dog food.