We know that he needs 48 oz of tomatoes.
Let be "x" the cost in dollars of 48 ounces of Brand A.
We know tha 8 ounces cost $2.99 in Brand A, so we can set up the following proportion:
Now we must solve for "x":
Let be "y" the cost in dollars of 48 ounces of Brand B.
We know that 16 ounces cost $4.99 in Brand B, so we can set up the following proportion:
Solving for "y", we get:
Therefore, as you can see, if he chooses Brand A,he'd pay $17.94 and if he chooses Brand B, he'd pay $14.97. So you can conclude that the better value is: Brand B.