Latest TCS Aptitude Question SOLUTION: In a circular track of length 100m, three persons A, B and C start together. A and B in the same direction at speeds of 10m/s and 8m/s respectively. While C runs in the opposite d

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(#M40153333) TCS Numerical Ability question Keep an EYE

In a circular track of length 100m, three persons A, B and C start together. A and
B in the same direction at speeds of 10m/s and 8m/s respectively. While C runs in
the opposite direction at 15 m/s. When will all three meet for the first time after the start?

Asked In TCS Rajashekar (8 years ago)

Unsolved Read Solution (5)

Is this Puzzle helpful?   (10)   (2) Submit Your Solution Time Distance and Speed

Read Solution (5) :

swathi choda  (8 years ago)

A takes (100m) / (10m/s) = 10s to finish one complte round.
B takes (100m) / (8m/s) = 12.5s to finish one complte round.
C takes (100m) / (15m/s) = (20/3)s to finish one complte round.
For them to meet, the time will be LCM of above three times ie LCM(10,12.5,20/3)
= LCM(10/1,25/2,20/3) =100sec

Is this solution Helpfull? Yes (10) | No   

nipun  (8 years ago)

time of first meeting=circumference /relative speed
for A and B=100/10-8 =50
for A and C=100/15-10=20
Lcm of (50,20)=100 sec

Is this solution Helpfull? Yes (5) | No (2)  

tina  (8 years ago)

Tab=(100/10-8)
Tac=(100/10+15)
ans=LCM(Tab, Tac)=100seconds.

Is this solution Helpfull? Yes (3) | No   

pratik saha roy  (8 years ago)

A takes (100m) / (10m/s) = 10s to finish one complte round.
B takes (100m) / (8m/s) = 12.5s to finish one complte round.
C takes (100m) / (15m/s) = (20/3)s to finish one complte round.
For them to meet, the time will be LCM of above three times ie LCM(10,12.5,20/3)
= LCM(10/1,25/2,20/3) =100sec

Is this solution Helpfull? Yes (1) | No   

kirti  (8 years ago)

for A and C = 100 /15+10=4
@NIPUN

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