Isabelle decided to go on an 8 mile run in which she ran from home to the school four miles away and then back the same route. The first four miles took her 40 minutes to complete, and the returning four miles took her 24 mins to complete. What was the wind speed in mph?	Pick one.
A) 1 mph
B) 2 mph
C) 3 mph
D) 4 mph
E) 5 mph
Explanation:   Speed from home to school: (4/40) X 60 = 6 mph   Speed from school to home: (4/24) X 60 = 10 mph   Wind speed: 1/2 (10 - 6) = 4/2= 
<gadget id="calculator">4/2</gadget>
<output>2</output>
2 mph   Answer: Option 2 mph
<result>B</result>
Isabelle decided to go on an 8 mile run in which she ran from home to the school four miles away and then back the same route. The first four miles took her 40 minutes to complete, and the returning four miles took her 24 mins to complete. What was the wind speed in mph?