Question

There were 75 customers in the store at 1:00. The store must be emptied of customers when it closes at 5:00. How many customers must leave the store between 4:00 and 5:00?

Answer 1

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.