Unit 7 · Data and Percentage
Dog Park Survey — Count the Legs
Lesson 3 of 9
About this lesson
60 legs in a dog park, 8 owners — some with 1 dog, some with 2. No one tells you how many of each, but two simple equations crack it. The secret: every extra dog adds exactly 4 legs.
Chapters
Question
Yesterday, in the dog park, I saw 8 dog owners exercising their dogs.
Some of the dog owners had 1 dog, and some dog owners had 2 dogs.
Counting the legs of the dogs and the legs of the dog owners, there were a total of 60 legs.
All dogs have 4 legs and all dog owners have 2 legs.
How many dog owners had only 1 dog?
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