If Jane takes 12 seconds to run y yards, how many minutes will it take her to run x yards at the same rate? Choose one.
A) xy/12 B) 12x/(60y) C) 60xy/12 D) xy/720 E) 720x/y
The answer is B.   She runs x yards in 12x/y seconds =12x/60y minutes.
<result>B</result>
If Jane takes 12 seconds to run y yards, how many minutes will it take her to run x yards at the same rate?