Find the Speed

An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with x sec and coming back at 2x sec. Take total time of bird traveling as 187.5s. Find the to and fro speed of the bird.

This question is related to Dell Interview

shafreenz
Profile Answers by shafreenz Questions by shafreenz
Aug 30th, 2010
5
5799

Questions by shafreenz

Aptitude

Answer

Showing Answers 1 - 5 of 5 Answers

Sandhya.Kishan
Profile Answers by Sandhya.Kishan

May 28th, 2012

distancetravelled by the bird=2000m
time taken=187.5 sec
=375/2 sec
speed is in the ratio of 1:2
dividing the time in the ratio of 1:2
time to=375/2(2/3)=125 sec
speed=distane/time=1000/125=8 m/sec
speed in thefro direction=16m/sec

Yongjie Liang

Jul 19th, 2023

support time cut ratio 1:2, suppose that bird from begining to end fily 62.5s, so the train will levave 1000-625=375 m behind the original point. bird needs 375/62.5=6m/s will hit the end. now move the original point the end of train now. the train will move 125s, and the bird has to move 1000+10X125 = 2250m to hit the head of train. so 2250/125 = 18m/s.