Question

A postman traveled from his post office to a
village in order to distribute mails. He
started on his bicycle from the post office at
the speed of 25 km / hr. But, when he was
about to return, a thief stole his bicycle. As a
result, he had to walk back to the post office
on foot
at the speed of 4 km / hr. If the traveling part
of his day lasted for 2 hours and 54 minutes,
find the distance between the post office
and the village.​

Answer 1

Answer:

20km

Solution:

Average speed = 2ab/(a+b)here a=25 b=4 = 2x25x4/(25+4)=200/29 km/hr.

Distance covered in 5 hours 48 minutes

- Speed x time = (200/29)x (29/5) Distance covered in 5 hours 48 minutes = 40 kms

Distance of the post office from the village = (40/2)=20 km.