Arif runs 1 3/4 times as fast as Bilal. If Arif gives Bilal a start of 84 m, how long should the race course be so that both reach the winning post together?
Correct answer B. 196 m
Explanation
In the same time Arif runs L and Bilal runs L − 84, so L = (7/4)(L − 84). This gives 3L = 588 and L = 196 m.
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