A car traveled 45% of the way from Town A to Town B at an average speed of 45 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) 45	B) 55	C) 65	D) 43	E) 42
Assume total distance = 100miles   Time taken for 45 miles = 45/45= 
<gadget id="calculator">45/45</gadget>
<output>1</output>
1 hour   Time taken for the rest of the 55 miles= 55/v hours.   Average speed = 50   Therefore the total time needed = 2 hours.   2 = 1 + 55/v   Hence v = 55 mph   Answer : 55
<result>B</result>
A car traveled 45% of the way from Town A to Town B at an average speed of 45 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?