Respuesta :

backseatdog
Speed in miles per hour is calculated as:

distance (in miles) ÷ time (in hours)

So we have:

(3/4) ÷ (3/10) = (3×10)/(4×3) = 30/12 = 15/6 = 5/2 = 2.5

So his speed is 2.5 mph (miles per hour).

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