Question

A If a bus covers 4.2 km in 7 minutes find out
find
it’s speed

Answer 1

36

Step-by-step explanation:

v=d/t

where

d=4.2 km

t=7 minutes/60 minutes (using conversion)
t=.1166666667 H
so,
v=4.2 km/.117 H
v=36 km/H

Answer 2

Step-by-step explanation:

4.2 km / 7 min

IS already speed.

as

speed = distance / time

but it probably means a standardized speed like

km/h = km / 1 hour

so, we have the fraction (every ratio is audio a fraction)

4.2 km / 7 min = 0.6 km / 1 min

aha, and now we only need to multiply this by 60/60 to get the speed as per 1 hour (remember, 1 hour = 60 minutes) :

0.6/1 × 60/60 = 0.6×60 / (1×60) = 36/60 = 36 km/h