Hello experts and
GMATNinjaI found the answer A quite confusing given the following scenario:
Current scenario:
------------------------Fast dialing---Slow dialing---Total
Price per customer-------10---------------8
Cost per customer--------5----------------6
profit per customer-------5----------------2
# of customers-----------3----------------7---------- 10
Total profits--------------15---------------14----------29
New scenario: all customers switch to FD at revenue of 8$ per customer
------------------------Fast dialing
Price per customer------8
Cost per customer-------5
profit per customer------3
# of customers----------10
Total profits--------------30
So basically in this scenario, the proposal to switch all customers to FD would increase total profits