Question

A,B and C start at the same time at 8:00 a.m. in the same direction to run around a circular Stadium. A completes around in 252 sec, B in 308 sec and C in 198 sec ,all starting at the same point. After what time will they meet again .


8:26:18 a.m
8:42:36 a.m
8:46:12 a.m
8:45 a.m​

Answer 1

Answer:

Rate of running by A,B,C=

252

1

:

308

1

:

198

1

They will be at staring point at a time which

is a multiple of time taken to funchih one round

Hence they'll must at a there which is LCM (252,308,198)

=LCM(252,308,198)

=LCM(2

2

.7

1

.3

2

,2

2

.7

1

,11

1

,2

1

.3

2

,11

1

)

=2

2

.3

2

.7

1

.11

1

=2772 seconds

=A6 mins 12 sec