Question

rahul travels 30 km at a uniform speed of 40km/hr and next 30 km/hr at a uniform speed of 20km/hr .find the average speed

Answer 1

Hii...
Here is your answer...

Solution:-
Distance first=30km
Speed=40km/h
so,
$time = \frac{30}{40} \\ = > .75hrs$
Now,
Distance second=30km
Speed=20km/h
So,
$time = \frac{30}{20} \\ = > 1.5hrs$
Therefore,
$average \: speed = \frac{total \: distance}{total \: time \: taken} \\ = > \frac{(30 + 30)}{(.75 + 1.5)} \\ = > \frac{60}{2.25}$
$= > 26.67$
Hence,the average speed=26.67km/h

Hope it helps uh...✌️✌️✌️

Answer 2

Answer:

30 km at uniform speed of 40 km and next 30 km at a uniform speed of 20 km 30 - 30 - 20 is is equal to 10 that is your answer