1.

Two athletes A and B are running on a 900 m long track from opposite ends, their speeds are in the ratio of 4:5, when will they cross each other:

A. 500 m from A's end
B. 400 m from B's end
C. 400 m from A's end
D. 100 m from A's end
Answer» D. 100 m from A's end


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