Question

Example (14) : A man complete of the whole
journey by foot at the speed of 20km/h and of
the same journey is completed by bus at 40km/
hrs and remaining
is completed by scooter at
3
60km/hr, then find out the average speed of whole
journey​

Answer 1

Given:-

Man completed whole Journey by foot = 20km/hr

Same journey completed by bus = 40km/hr

Remaining completed by scooter = 60km/hr

Need To Find:-

Average speed of the whole Journey he completed.

Solution:-

$\small\sf{He \: completed \: his \: journey} = </p><p>20 + 40 + 60$

$\small\sf{20 + 40 + 60 = 120}$

He completed his journey by 3 vehicles = By Foot, By Bus and By Scooter

$\small\sf{so} \: \frac{20 + 40 + 6 0}{3}$

$\small\sf{or, } \frac{120}{3} = 40$

$\small\sf\fbox\blue{Hence, average is 40, \: 40 \: km \: he \: completed \: his \: journey}$