Answer / julia jeni

A swims 50mts in 2mins*60=120secs;
B swims 50mts in 2.15mins*60=135secs;
To swim 2000mts, 50mts*40times=2000mts;
so A swims for 120secs*40times=4800secs;
so B swims for 135secs*40times=5400secs;
The common factor for 120secs,135secs is 1080secs.
For A, 4800secs/1080secs=4.4(app 4)
For B, 5400secs/1080secs=5
Therefore A and B meet 4 times and hence bell will struck 4
times...........

Answer / v venu gopal

If the bell rung when they r started is also counted then it
will be 5 otherwise 4

Answer / karthik

i think it is 39 times...

Answer / shabnam

if starting consider bell will struck 40 times.

Answer / revathi

Only once(when they get started) i think.

Answer / guest

20 approx.. ( not sure)

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