Answer:
THe 16 Oz is cheaper by $0.036 per unit
Explanation:
Given
A 2-litre cola;
Size = 2 litre
Total Cost = $1.19
6 cans;
Size = 16 Oz each
Size = 16 * 6 = 96 Oz.
Total Cost = $1.59
Required?
Which is a better buy.
By "being a better buy", we assume that it means cheaper.
To calculate the cheaper buy, first we need to convert the containers to the same unit.
We'll convert 96 Oz to litres
1 Oz = 0.0295735 litre
To get the size of 96 Oz, we can simply multiply both sides of the equation by 96. This gives
96 * 1 Oz = 96 * 0.0295735 litre
96 Oz = 2.839056
Then, we'll calculate the unit price;
Unit price is calculated by Total price / Size
For the 2-litre cola;
Size = 2 litre
Total Cost = $1.19
Unit Price = $1.19/2 litre
Unit Price = $0.596 per litre
6 cans;
Size = 16 Oz each
Size = 16 * 6 = 96 Oz = 2.839056 litre
Total Cost = $1.59
Unit Price = $1.59/2.839056 litre
Unit Price = $0.560 per litre
The unit cost of the 16oz is smaller than the 2 litre bottle, hence we conclude that the 16 Oz is cheaper.
And it is cheaper by ($0.596 - $0.560)
= $0.036