Ram travels first half of the distance at 50m/s and other at 75m/s. if the distance travelled is 3km. find his average speed to travel the entire journey?
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Total distance = 3km
half of it = 1.5 km = 1500 m
time taken to travel 1st half will be
T = 1500/50 = 30 s
time taken to travel 2nd half will be
T = 1500/75 = 20 s
Total time = 30 + 20 = 50 s
total distance = 3000 m
Required speed = 3000/50 = 60 m/s
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