Question

A man travelled from a village to the post office at the rate of 30 km/hr and walked back at a rate
of 5 km/hr. If the whole journey took 35 hours, find the Distance of the post-office from the village?
a)120km
b)180km
c)150km
d)210km​

Answer 1

Answer:

Explanation:

Average speed = 2aba+b,

here a=25 b=4

= 2 x 25 x 4/(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 = 40kms.

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