Answer:
Step-by-step explanation:
Let assume his average speed is V
Let V be in km/h
And the time he use to stop is 180minutes
t=180mins=3hours
Though this question looks incomplete
But let analyse
Speed is given as
Speed = distance /time
Then,
Distance =speed ×time
d= s×t
Then, the total distance travel is
d=V×3
d=3V km
But there is other thing to analyse
Assuming during this 180 mins, he uses some time to stop and some time to travel, you will need to analyse each stages too
Assuming out of the 180 mins
He travelled 60mins at speed Xkm/hr, time is 1hr
He stop for 60mins waiting at a filling station to refuel and eat
traveled the rest of the journey at a speed of V=Y km/h, time remaining 60mins, which is 1hr
When he was waiting he has no distance travel, so distance there is zero, but this will have effect in the average speed of the car if asked
From the first journey
d=s×t
d=X×1hr
d=Xkm
Also, for the second journey
d=s×t
d=Y×1hr
d=Ykm
Total distance is (X+Y)km
