Answer:
87 customers
Step-by-step explanation:
Consider the below table is attached with this question.
From the below table it is clear that the number of customers entered between 1:00 to 4:00 is
\(30+14+18=62\)
The number of customers leaved between 1:00 to 4:00 is
\(-12-8-30=-50\)
Total change in the number of customers between 1:00 to 4:00 is
\(62-50=12\)
There were 75 customers in the store at 1:00. So, total number of customers at 4:00 is
\(75+12=87\)
The store must be emptied of customers when it closes at 5:00
Therefore, 87 customers must leave the store between 4:00 and 5:00.
