1.

3.A man moves from station A to B with speed 5 km/h for half time and with speed 15 km/h for remaining halftime. The average speed of the man over the entire journey is(1) 10 km/h(2) 12 km/h(3) 6 km/h(4) 25 km/h​

Answer»

Answer:

6 km/h

Explanation:

let, REQUIRED TIME for 1st half is x/2.

distance=5X/2

required time for next half is x/6 hr.

TOTAL time= 5x/6,total distance = 5x km

average speed = distance/time= 6km/hr



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