How would you estimate the number of calories currently in a typical mid-sized grocery store?

Question

Anonymous · Accepted Answer

Assumptions:

1. 1. This grocery store is located in the United States

2. 2. Mid Sized means that there are approximately 12 aisles. I'm assuming this
    isn't a mega store like Costco, nor a corner store.

My first question would be: what is this calorie count needed for? This there a
business goal or metric that the grocery store in question needs to track, for
one reason for another? For example, let's say this is a health focused grocery
store, and they want to focus on lower calorie foods, and therefore
understanding the total calorie count is an important metric for them?

On to the estimation. If there are 12 aisles, each ailse consists of 2 sides, so
there are 24 shelfs. Assuming that the length of the aisle is 60 feet. Lets
break this down into section of 10 feet each wide. The typical height of the
aisle will be about 7 feet since most people cannot see over an aisle. Each
aisle is approx 3 feet deep, but only 2 of those feet are full of products. So
the total cubic feet is 10 feet x 7 feet x 2 feet = 140 cube feet. Let's use
granola bars as an estimate. One bar on the low side will be 100 calories. There
can be about 20 stacked in a cubic foot, but that doesn't account for package
space, so we will say 10. The average cube foot of food will have about 1000
calories. 1000 x 140 = 140,000 calories per aisle. Times 6 for one aisle =
840,000 x 24 aisles = about 20 million calories. I'll assume that the empty
space in the aisles themselves is offset by the "end parts" of each aisle that
has food for sale. Final answer: 20 million calories.

How would you estimate the number of calories currently in a typical mid-sized grocery store?

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