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Most pets age at a different rate than their human companions. For example, a 3-year-old dog is often considered to be 21 in human years. Assume that the age of a dog varies directly as its equivalent age in human years. What is the human-year age of a dog that is 6-years-old?

Answer :

Answer: 42 years

Explanation: Since the problem tells us that a 3 year old dog is 21 years of age, we know the ratio is 1:7. When it asks us how old a 6 year old dog is in dog years we do 6(7) and get 42 years. Hope this helped!

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