A car traveled 80% of the way from Town X to Town Y at an average speed of 80 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? Choose the correct choice from the following answers:
A) 25 B) 35 C) 45 D) 55 E) 20
Assume total distance = 100miles   Time taken for 80 miles = 80/80= 
<gadget id="calculator">80/80</gadget>
<output>1</output>
1 hour   Time taken for the rest of the 20 miles= 20/v hours.   Average speed = 50   Therefore the total time needed = 2 hours.   2 = 1 + 20/v   Hence v = 20 mph   Answer : 20
<result>E</result>
A car traveled 80% of the way from Town X to Town Y at an average speed of 80 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?