Question

There were 75 customers in the store at 1:00 the store must be emptied of customers when it close at 5:00 how many customers l ave the store between 4:00 and 5:00pm

1:00 to 2:00. Entering 30 , leaving -12
2:00 to 3:00 entenrig 14 , leaving -8
3:00 to 4:00 entering 18, leaving -30

Can someone also explained not just the answer thanks

Answer 1

87 customers.

Explanation:

There were 75 customers in the store at 1:00 PM

at 1:00 to 2:00 PM entering 30, leaving 12 = 75 + 30 - 12 = 93 customers

at 2:00 to 3:00 PM entering 14, leaving 8 = 93 + 14 - 8 = 99 customers

at 3:00 to 4:00 PM entering 18, leaving 30 = 99 + 18 - 30 = 87 customers.

at 4:00 and 5:00 PM there were 87 customers.

Answer 2

1) At 1:00

customers in the store=75

2) At 1:00 to 2:00. Entering 30 , leaving -12

customers in the store=75+30-12=93

3) At 2:00 to 3:00 entering 14 , leaving -8

customers in the store=93+14-8=99

4) At 3:00 to 4:00 entering 18, leaving -30

customers in the store=99+18-30=87

therefore

assuming no more customers come into the store

the answer is

87 customers