City A to city B, Andrew drove for 1hr at 44 mph and for 3 hours at 60 mph. What was the average speed for the whole trip?
Choices
A) 56 B) 57.5 C) 61 D) 61.5 E) 62.5
The total distance is 1×44+3×60=224   And the total time is 4 hours. Hence,   56verage Speed=(Total Distance/Total Time)   =224/4= 
<gadget id="calculator">224/4</gadget>
<output>56</output>
56   56
<result>A</result>
City A to city B, Andrew drove for 1hr at 44 mph and for 3 hours at 60 mph. What was the average speed for the whole trip?