A car travels from point A to point B. The average speed of the car is 60 km/hr and it travels the first half of the trip at a speed of 75 km/hr. What is the speed of the car in the second half of the trip?	Choose the correct answer
A) 40
B) 45
C) 48
D) 50
E) 55
Let D be the distance and let V be the speed in the second half.   The total time = T1 + T2   50/60 = 50/150 + (50/2) / V   50/100 = 50/2V and so V = 50 km/hr   The answer is 50.
<result>D</result>
A car travels from point A to point B. The average speed of the car is 60 km/hr and it travels the first half of the trip at a speed of 75 km/hr. What is the speed of the car in the second half of the trip?