One lap around a dirt track is 1/3 miles. it takes bryce 1/9 hour to ride one lap. what is bryce's unit rate ,in miles, around the track?

Bryce's speed (slow speed I might add) is   3 miles per hour.

Explanation:

s /d= t

where  

s = speed  d= distance  t  = time.

Solving for   gives:

s = 1/3 / 1/9

s= 9/3

s= 3 miles per hour

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step-by-step explanation: