A) 4 mins 3 secs
B) 3 mins 4 secs
C) 5 mins
D) 4 mins 20 secs
B covers 28 meters in 7sec. So, B’s time over the course = (7/28)*1000 =250 sec.
Whereas A’s time over the course = 250 -7 = 243 sec.
i.e A’s time over the course is 4min, 3 sec.
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