At an automatic car wash,cars arrive randomly at a rate of 7 cars every 30 minutes.The car wash takes exactly 4 minutes (this is constant).On average,what would be the length of the line?
A)8.171
B)7.467
C)6.53
D)0.467
E)None of the above

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The Answer of At an automatic car wash,cars arrive randomly at a rate of 7 cars every 30 minutes.The car wash takes exactly 4 minutes (this is constant).On average,what would be the length of the line?
A)8.171
B)7.467
C)6.53
D)0.467
E)None of the above

At an Automatic Car Wash,cars Arrive Randomly at a Rate