A bus started from the bus stand at 8 Am and after staying
30 minutes at a destination return back to the bus stand.
The Destination is 27 miles from the bus stand . The Speed
of the bus is 18mph . In the return journey the bus travells
with 50% fast speed.At what time it is return to the bus
stand ?

Answer Posted / praveen

Bus started at 8:00

it travelled with 18mph...

distance of destination is 27 miles...

we know velocity=(distance)/time

i.e., time=27/18hours=3/2hours=90 min...

i.e., the bus reached destination at 9:30

the bus stayed for 30 min...

so the bus started return journey at 10:00

now the bus returned with velocity 18 + (18/2)=27mph

the taken to the bus to travel = 27/27=1 hour = 60 min...

so bus would be returned on 11:00...

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