2. A man completes 30 km of a journey at 6 km/h and the remaining 40 km in 5 h. His average speed for whole journey is.
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Answer:
Given
1st journey of 30km completed at 6km/h
remaining journey of 40 km at 5 h
solution
time= distance / speed
= 30 / 6
= 5 hours
average speed = total distance traveled / total time taken
= 30+40 / 5+5
=70 / 10
= 7 km/h
:• the avrage speed for whole journey is 7 km/h
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