Question

A non-stop bus goes from one station to another station with of 54km/h. The same bus returns from the second station to the first station with a speed of 36km/h. Find the average speed of the bus for the entire journey.

Answer 1

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հίί ʍαtε_______✯◡✯
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һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
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✯♦let distance between the stations be x km
while going,
=========================
▶speed = 54 km/hr
▶time taken = x /54 hr

♦while returning,
=================
▶speed = 36 km/hr
▶so time taken = x /36 hr

♦total time = x/54 + x/36
= (2x + 3x) / 108
= 5x/108 hr

▶average speed = total distance / total time
======================================
= (x + x) / 5x/108
= 2x * 108 / 5x
= 216 / 5
= 43.2 km/hr

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$hope \: it \: helps$

★BRAINLY★

Answer 2

let distance between the stations be x km

while going,

=========================

▶speed = 54 km/hr

▶time taken = x /54 hr

♦while returning,

=================

▶speed = 36 km/hr

▶so time taken = x /36 hr

♦total time = x/54 + x/36

= (2x + 3x) / 108

= 5x/108 hr

▶average speed = total distance / total time

======================================

= (x + x) / 5x/108

= 2x * 108 / 5x

= 216 / 5

= 43.2 km/hr