I don’t know about you, but I absolutely love Chipotle and their guacamole. While grabbing lunch a few months ago, I was able to watch an employee make a batch since they have an open kitchen. While observing, I tried to make a mental note of the amounts of each ingredient.

Guac Recipe
Learn How to Make Guac at Home. Digital Image. Whats Cooking A Batch Made In Heaven. Chipotle Mexican Grill, n.d. Web 30 April 2015. <http://chipotle.com/guac-recipe>.

Now, as much as I love a good guac, I know I can not eat the amount of guac that Chipotle prepares. I needed to know how to make a small amount but I wanted it to taste the same. With this goal in mind, I set out to make guacamole by maintaining the ratio of ingredients used by Chipotle with smaller measurements.

After going through the process and problem solving used to make a small batch of guac, guess what ended up in my inbox? A message from Chipotle and a recipe for how to make smaller portions of their guacamole!

Real Life Math: Making Guacamole

This great recipe arrived just in time for Cinco De Mayo! I plan on serving a crowd so I plan on using six avocados instead of the recommended two. This is where knowing ratios and proportions can really come in handy. I can use equivalent ratios with larger quantities to make some great guacamole.

Example:

proportion example

After solving the proportion for x, I found that I would need 3/4 cup of red onions. I could continue the same process for each ingredient, but I noticed that I was just using a scale factor of 1 to 3. I can just triple each ingredient and I will be to ready make this tasty treat.

Now, Chipotle uses 48 avocados for 1 batch and they make multiple batches a day! Can you calculate how much of each ingredient they would need for a week’s worth of guac?

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Today, I’m linking up with 4mulaFun, The Teacher StudioTeaching to Inspire in 5th, and MissMathDork for a look at how math is used in the real world.  You might want to check out their Pinterest board to see previous Math is Real Life posts.

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Angela Culley
Real Life Math – Making Guacamole
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