Question 328874
---  in 1 1/4 [miles] hour 
I'll assume you mean 1 1/4 hours.
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m/h=X/h
(2 5/8)/(1 1/4)=X/(4 2/5)
(21/8)/(5/4)=X/(22/5)
21/8*4/5=X*5/22
84/40=5X/22 CROSS MULTIPLY.
5X*40=84*22
200X=1,848
X=1,848/200
X=231/25