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Sprinter A runs 100 meters in 15 seconds, while sprinter B starts 1.5 seconds later and runs 100 meters in 14 seconds. If each of them runs at a constant rate, who is further in 10 seconds after the start of the race? Explain. 

 Oct 25, 2016
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Remember     Rate x Time = Distance

 

#1   rate = 100m/15sec        rate x time =  100/15 x 10 =66 2/3

#2   rate = 100m/14sec        rate x time =   100/14 x 8.5 = 60.71 m    (remember he starts 1.5 sec late)

 

Runner #1 (A) is further ahead after 10 seconds

 Oct 25, 2016

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