Math, asked by khasda94gmailcom, 1 year ago

a man completes 30 km of a journey at 6 km/h and the remaining 40 km of the journey in 5 h.find the average speed for the whole journey

Answers

Answered by SamRaiden

13

Yo
Let the average speed be x
✋Total dist.=70 km
So avg. S=> x =(Sum of speed )÷ 2
=(6 + 8)/2
= 7.0 km/h

SamRaiden: the why r u calc the time

Rajnishyaar: total time = 5+ 30/6 = 10hr

SamRaiden: and time is only 5 hrs

SamRaiden: not 10

Rajnishyaar: distance = 30 km. speed = 6 km/hr so time = 30/6 =5 hr.

SamRaiden: oh right

SamRaiden: sry

SamRaiden: sryi

SamRaiden: my bad

Rajnishyaar: ok ... .

Answered by Rajnishyaar

9

average speed = (40+30)/(5+5)= 70/10= 7 km/hr... ans

Rajnishyaar: is my answer is correct

khasda94gmailcom: yes

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