Question

A milkman travles a distance of 60 km at speed of 40 kmph,and distamce of 40 km at speed of 60 kmph.What is the average spwed of both tripa

Answer 1

Answer:

Average speed = total distance covered/total time taken

60 +40/60+40

100/100

1kmph

Answer 2

Answer:

46.15 km/h.

Explanation:

from the question, it is quite obvious that the avg speed would lie between 40km/h and 60 km/h.

so the answer is somewhere between 40 and 60.

$avg speed \: = \frac{total \: travelled \: distance}{total \: taken \: time}$

for case :1

time t1 = 60km / 40km/h = 3/2 hours

case: 2

t2 = 40km / 60 km/h = 2/3 hours

therefore, avg speed = (60 + 40) / (3/2 + 2/3) = 46.15 km/h