Question

A
train
completes
a
journey
in
6
hours
moving
at
the
rate
30
km
/
hour
.
How
much
time
will
it
take
to
complete
the
same
journey
at
a
speed
of
36
km
/
hour
?
​

Answer 1

Answer:

given:

time = 6hrs

speed = 30 km/hr

Step-by-step explanation:

speed = distance / time

30 = distance / 6

distance = speed * time

              =  180 km

now given:

distance = 180 km

speed = 36 km/hr

time taken = ?

speed = d/t

36 = 180/t

therefore 36t = 180

time = t = 180/36

= 5 hr

time taken = 5hr