Question: what is the total utilization of a circuitswitched network accommodating...

What is the total utilization of a circuit-switched network, accommodating five users with equal bandwidth share, and the following properties:

• Two users each using 67% of their bandwidth share
• Two users each using 55% of their bandwidth share
• One user using 0% of their bandwidth share

Give answer in percent, with one decimal place (normal rounding) and no percentage sign (e.g. for 49.15% you would enter "49.2" without the quotes).

How do you reach the answer of 48.8?