har On average a customer arrives after every 6 minutes at a…

har
On average a customer arrives after every 6 minutes at a checkout register in an electronic products store. The checkout clerk staffed at the register takes an average of 4 minutes to checkout a customer. Assuming this is a stable process what is the rate at which customers are leaving the checkout lane?
12 customers per hour
15 customers per hour
6 customers per hour
10 customer per hour

NEED EXPLANATION IN TEXT FORM

This is the third time i am uploading same question .Please provide appropriate answer. Let real experts solve this question. IF IT ALL I FIND INCORRECT OR PLAGARI*ZED ANSWER THEN I AM GOING TO REPORT YOUR ANSWER So that course hero will remove your tutoring rights.
Thank you
Be careful while uploading answer

also need explanation for incorrect answer else i will report

Place this order or similar order and get an amazing discount. USE Discount code “GET20” for 20% discount