Question

a car travels 100km at a speed of 60km/h and return with a speed of. 40km/h calculate the average speed for the entire trip​

Answer 1

Using speed =TimeDistance

⇒Time=speeddistance

We have total time =

$\frac{100}{60}$

$\frac{100}{40}$

=

$\frac{25}{6}$

Hr

Now, Average speed =Time(tot)/Distance(tot)=625200

⇒ Average spped =

$\frac{1200}{25}$

48 km/hr