Question

A non stop bus goes from one station with a speed 54km/h The same bus return s from the station with a speed of 36km /h find average speed
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Answer 1

Hey

Here is your answer

Answer:

43.2km/hr

Explanation:

let distance between the station be x km while going speed=54km/hr so time taken =x/54hr while returning speed=36km/hr

so time taken=x/36

Total time=x/54+x/36

(2x+3x)/108

average speed=total distance/total time

=(x+x)5x/108

=2x 108/5x

=216/5

=43.2km/h

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Answer 2

Answer:

Let the distance between the stations be x km.

While going,

Speed = 54 km/h

Distance = x km

Time = distance/speed

= x/54 h

While returning,

Speed = 36km /h

Distance = x km

Time = distance/speed

= x/36 h

w.k.t,

Average speed = total distance / total time

= ( x + x ) / ( x/54 + x/36 )

= 2x / (5x/108)

= 2x × 108/5x

= 2 × 108/5

= 216 / 5

= 43.2 km/h

Hence the average speed is 43.2 km/h.

Hope this is helpful to you.

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