Question

A non-stop bus goes from one station to another station with a speed of 54km/ hr.The same bus returns from the second station to the first station  with a speed of 36km hr-1. find the average speed of the bus.

Answer 1

avg speed = (54 + 36 ) 2
avg speed = 90/ 2
avg speed = 45 km /hr
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Answer 2

Answer:

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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,

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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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