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Becca and alice are training for a race. becca runs 3 3/4 miles in 1/2 of an hour, and alice runs 5 1/4 miles in 3/4 of an hour. who runs faster and by how many miles per hour? justify your answer.200 words left

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kritter1
Becca: in 1 hour; 

(3(3/4) miles in 1/2 hour)2 
=7.5 miles in 1 hour 

Alice: in 1 hour; 

(5(1/4) miles in 3/4 hours)
She travels 5(1/4)/3 = 1.75 miles in 1/4 hours. 

Travels 1.75x4 = 7 miles in 1 hour 

As seen, Becca runs faster, 0.5 miles per hour faster. 

Hope I helped :) 

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