Question

A non-stop bus goes from one station to another station with a speed of 54 km h-1. The same bus returns from the second station to the first station with a speed of 36 km h-I. Find the average speed of the bus for the
entire journey.​

Answer 1

Explanation:

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,

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▶speed = 54 km/hr

▶time taken = x /54 hr

♦while returning,

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▶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

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= (x + x) / 5x/108

= 2x * 108 / 5x

= 216 / 5

= 43.2 km/hr

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