A car traveled 40% of the way from Town X to Town Y at an average speed of 40 mph. The car traveled at an average speed of v mph for the remaining part of the trip. The average speed for the entire trip was 50 mph. What is v in mph? Pick:
A) 50
B) 45
C) 55
D) 60
E) 65
Assume total distance = 100miles   Time taken for 40 miles = 40/40= 
<gadget id="calculator">40/40</gadget>
<output>1</output>
1 hour   Time taken for the rest of the 60 miles= 60/v hours.   Average speed = 50   Therefore the total time needed = 2 hours.   2 = 1 + 60/v   Hence v = 60 mph   Answer : 60
<result>D</result>
A car traveled 40% of the way from Town X to Town Y at an average speed of 40 mph. The car traveled at an average speed of v mph for the remaining part of the trip. The average speed for the entire trip was 50 mph. What is v in mph?