If Susan takes 13 seconds to run y yards, how many minutes will it take her to run x yards at the same rate?	Options
A) 13x/(60y) B) xy/13 C) 60xy/13 D) xy/780 E) 780x/y
The answer is A.   She runs x yards in 13x/y seconds =13x/60y minutes.
<result>A</result>
If Susan takes 13 seconds to run y yards, how many minutes will it take her to run x yards at the same rate?