Question

A girl take 20 minutes to reach her school. Her school is 4km away from her house. Calculate in m/second.

Answer 1

speed = distance/time
time = 20 min
speed = 4/20/60
= 4×60/20
= 4×3
. = 12 km/h
speed = 12×5/18 m/sec
= 60/18 m/s
= 10/3m/s

Answer 2

Answer:

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