Respuesta :

Answer:

1.05km/min

Step-by-step explanation:

[tex]Distance = 84 km\\\\Time = 1hr 20 min= 80minuttes\\\\Average \: Speed = \frac{Distance}{Time} \\\\A.S =\frac{84}{80} \\\\A.S = 1.05km/min[/tex]

SoulHacker

Given:

  • Distance = 84km
  • Time = 1hr20mins

Find:

  • Average speed of man.

Solution:

we, know that

➺ Average Speed = Total Distance/Total Time taken

where,

  • Total Distance = 84km = 84000m
  • Total time = 1hr20mins = 4800sec

♛ Substituting these values ♛

◗Average Speed = Distance/Time

◗Average Speed = 84000/4800

◗Average Speed = 840/48

◗Average Speed = 70/4

◗Average Speed = 17.5m/s

Hence, Average Speed of the man is 17.5m/s

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