Respuesta :

texaschic101

Answer:

Step-by-step explanation:

d = rt....and just so you know, speed is the same as rate

since we are looking for r, I am gonna change the equation

d = rt......r = d / t

d = 400

t = 10

now sub

r = d / t

r = 400/10

r = 40 ft per minute <=====

Answer: 40 per minute

Step-by-step explanation:

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