A car traveled 75% of the way from Town A to Town B at an average speed of 75 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 most appropriate option
A) 30	B) 35	C) 25	D) 40	E) 45
Assume total distance = 100miles   Time taken for 75 miles = 75/75= 
<gadget id="calculator">75/75</gadget>
<output>1</output>
1 hour   Time taken for the rest of the 25 miles= 25/v hours.   Average speed = 50   Therefore the total time needed = 2 hours.   2 = 1 + 25/v   Hence v = 25 mph   Answer : 25
<result>C</result>
A car traveled 75% of the way from Town A to Town B at an average speed of 75 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?