Question

A 2 liter bottle of Coke for $1.39 or a 12 pack of 12 ounce cans of Pepsi for $3.49. Which is the better deal?

Answer 1

2 liter bottle of coke for $1.39

Answer 2

2 liters of coke is a better deal than Pepsi.

Explanation:

A 2 liter bottle of Coke for $1.39.

1 liter coke will cost =
`(1.39)/(2)` = $0.695

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12 pack of 12 ounce cans of Pepsi for $3.49.

Means we have 1 pack of 12 ounce cans for =
`(3.49)/(12)` = $0.291

1 ounce = 0.0296 liters

12 ounce =
`12*0.0296` = 0.3552 liters

We get now that 0.3552 liters of Pepsi is for $0.291

1 liter of Pepsi will cost =
`(0.291)/(0.3552)` = $0.819

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Comparing both per liter costs, we can see that 2 liters of coke is a better deal than Pepsi.