Santhosh Gunasekaran's answer to Zhan Hau Chua's P6 Singapore question.

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Santhosh Gunasekaran
Santhosh Gunasekaran's answer
2 answers (Tutor Details)
1st
I have defined 1 lap as a 30 meter swim. I have assumed that meeting each other is defined as:
a) crossing each other when both swimmers are swimming in opposite direction
b) crossing each other when one swimmer overtakes the other while both are swimming in the same direction