Circumference of a circular path is 480 m. Three persons start from the same
position and walk at the speeds of 5 m/s, 4 m/s and 2.5 m/s. After what time they
will meet at the starting point again?
Plz answer fast......
Answers
Answered by
0
Answer:
Length of the track L=1200m
Speed of A = 27 \times \displaystyle\frac{5}{{18}} = 7.5 m/s
Speed of B = 45 \times \displaystyle\frac{5}{{18}} = 12.5 m/s
(i) same direction
Time = L / Relative Speed = \displaystyle\frac{{1200}}{{12.5 - 7.5}} = 240 sec
(ii) Opposite Direction
Time = L / Relative Speed = \displaystyle\frac{{1200}}{{12.5 + 7.5}} = 60 sec
When two persons A, and B are running around a circular track of length L mts with speeds of a, b m/s in the same direction
They meet each other at any point on the track is
L
(
a
−
b
)
seconds
They meet each other at exactly at the starting point =
(
L
a
,
L
b
)
seconds
Answered by
1
Answer:
Sry...having some doubts I this.....
Similar questions