The distance between cities A and B is 120 miles. A car travels from A B at 60 miles per hour and returns from B to A along the same route at 40 miles per hour. What is the average speed for the round trip?
Solution
Correct Answer: Option A
the car travels from A to B in = 120/60= 2 hr the car " " B to A in =120/4=3 hr total time = (2+3)=5 hr total distance = 240 mile so, average speed= 240/5 = 48 mile/hr
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