SOLUTION: Can anyone help me with this word problem? I've got two freezers one measures 1.5ft x 1.5ft x 5ft and sales for $350 another for 2ft x 2ft x 4ft and sales for $400. Which is a bet

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Question 325207: Can anyone help me with this word problem? I've got two freezers one measures 1.5ft x 1.5ft x 5ft and sales for $350 another for 2ft x 2ft x 4ft and sales for $400. Which is a better buy in terms of dollars per cubic foot?
Any help would be appreciated!
I multiplied the space and divided by the dollar amt:
1.5 x 1.5 x 5 = 11.25 / 350 = 0.032
2 x 2 x 4 = 16 / 400 = 0.04
not sure if this is right?

Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website!
When you say "dollars per cubic foot" you mean dollars/cubic feet. So you're diving the total cost by the volume. Another example is to consider "miles per hour". You're dividing the number of miles over 1 hour.

So this means that the first fridge is which means that you spend about $31.11 per cubic foot on the first fridge.

For the second one, you get: which means that you spend $25 per cubic foot on the second fridge.

So because you're spending less per cubic foot on the second fridge, this means that the second fridge is the better choice (in terms of price per cubic foot). Note: other factors should be considered when purchasing.

Notice how in your work, you found the first fridge to be the cheaper choice (when the second one is actually better). So dividing the terms in the wrong order completely changes the answer.