Cole drove from home to work at an average speed of 30 kmh. He then returned home at an average speed of 90 kmh. If the round trip took a total of 2 hours, how many minutes did it take Cole to drive to work?
Choose the correct choice from the following:
A) 66  B) 70  C) 72  D) 75  E) 90
Let the distance one way be x   Time from home to work = x/30   Time from work to home = x/90   Total time = 2 hrs   (x/30) + (x/90)= 2   Solving for x, we get x = 45   Time from home to work in minutes= (45)*60/30= 
<gadget id="calculator">(45)*60/30</gadget>
<output>90</output>
90 minutes   Ans= 90
<result>E</result>
Cole drove from home to work at an average speed of 30 kmh. He then returned home at an average speed of 90 kmh. If the round trip took a total of 2 hours, how many minutes did it take Cole to drive to work?