At an automatic car wash,cars arrive randomly at a rate of 7 every 30 minutes.The car wash takes exactly 4 minutes (this is constant).On average,how long would each car spend at the car wash?
A)28 minutes
B)32 minutes
C)17 minutes
D)24 minutes
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 every 30 minutes.The car wash takes exactly 4 minutes (this is constant).On average,how long would each car spend at the car wash?
A)28 minutes
B)32 minutes
C)17 minutes
D)24 minutes
E)None of the above

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