1961 AHSME Problems/Problem 2
Problem
An automobile travels 
feet in 
seconds. If this rate is maintained for 
minutes, how many yards does it travel in minutes?
Solution
Use dimensional analysis.
![\[\frac{a/6 \text{ feet}}{r \text{ seconds}} \cdot \frac{1 \text{ yard}}{3 \text{ feet}} \cdot \frac{60 \text{ seconds}}{1 \text{ minute}} \cdot 3 \text{ minutes}\]](http://latex.artofproblemsolving.com/1/0/a/10af9c1e845ef83f1f53e816f9dbdfd693e8ea8f.png)
![\[\frac{10a}{r} \text{ yards}\]](http://latex.artofproblemsolving.com/3/8/8/3889d8f019bb3f94371d0bc70e0a5251cb6d90e5.png)
The answer is 
.
See Also
| 1961 AHSC (Problems • Answer Key • Resources) | ||
| Preceded by Problem 1 |
Followed by Problem 3 | |
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| All AHSME Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
