2016 AMC 8
Complete problem set with solutions and individual problem pages
When Cheenu was a boy, he could run miles in hours and minutes. As an old man, he can now walk miles in hours. How many minutes longer does it take for him to walk a mile now compared to when he was a boy?
- A.
- B.
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Solution 1
When Cheenu was a boy, he could run miles in hours and minutes minutes minutes, thus running minutes per mile. Now that he is an old man, he can walk miles in hours minutes minutes, thus walking minutes per mile. Therefore, it takes him minutes longer to walk a mile now compared to when he was a boy.
Solution 2
From the question, the old man can travel five miles in two hours, so we can set both speeds to miles. We can see that Cheenu as an old man takes hours and minutes for him to travel miles, which is also minutes. We can then divide this by fifteen, which gives us , thus the answer is
