Question

Sriya with her family travelled from bolpur to suri by car at a speed of 40km/hr and returned to bolpur at a speed of 50km/hr. The av speed for the whole journey is

Answer 1

$\large {Average\: speed \:of\: journey =}$

$\large {= ( \frac {2xy}{x+y} ) km/hr}$

$\large {= \frac {2 \times 40 \times 50}{40+50} = \frac{400}{9} \: Km/h}$

$\large {= 44\frac{4}{9} \: Km/h}$

$\large {\therefore Average\: speed = 44\frac {4}{9} \: km/h}$

Answer 2

it should be the required answer