Dominique is buying water. She needs 2 liters. A half-liter of water costs $2.46. A 250-milliliter container of water costs $1.48. What should Dominique buy so she gets 2 liters at the lowest price? Explain.

Step-by-step explanation:

Dominique wants to buy liters of water.

Case 1:

A half-liter of water costs .

The half-liters is liter => The cost of a liter of water () is calculated by multiply  the cost of half-liter by :

x =

=> The cost of two liters: = x = x = $

Case 2:

A quarter-liter of water costs .

The 4 quarter-liters is liter => The cost of a liter of water () is calculated by multiply the cost of quarter-liter by :

x =

=> The cost of two liters: x = $

Compare and , the cost of second buying method is more expensive.

=> She should buy the water, in which a half-liter of water costs $

Hope this helps!

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