Difference between revisions of "2016 AMC 8 Problems/Problem 4"
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− | When Cheenu was a boy, he could run <math>15</math> miles in <math>210</math> minutes, thus running <math>14</math> minutes per mile. When he is an old man, he can walk <math>10</math> miles in <math>240</math> minutes, thus walking <math>24</math> minutes per mile. Therefore it takes him <math>\textbf{(B) }10</math> minutes longer to walk a mile now compared to when he was a boy. | + | When Cheenu was a boy, he could run <math>15</math> miles in <math>210</math> minutes, thus running <math>14</math> minutes per mile. When he is an old man, he can walk <math>10</math> miles in <math>240</math> minutes, thus walking <math>24</math> minutes per mile. Therefore it takes him <math>\boxed{\textbf{(B) }10}</math> minutes longer to walk a mile now compared to when he was a boy. |
{{AMC8 box|year=2016|num-b=3|num-a=5}} | {{AMC8 box|year=2016|num-b=3|num-a=5}} | ||
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Revision as of 10:44, 23 November 2016
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?
Solution
When Cheenu was a boy, he could run miles in minutes, thus running minutes per mile. When he is an old man, he can walk miles in minutes, thus walking minutes per mile. Therefore it takes him minutes longer to walk a mile now compared to when he was a boy.
2016 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 3 |
Followed by Problem 5 | |
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