The following table represents the number of seconds that a particular web page took to load on an iPhone for 25 users along with the frequency in each class.

Table of seconds to load relative to number of phone users

Seconds to Load	Number of Phone Users
0 to under 5 seconds	4
5 to under 10 seconds	7
10 to under 15 seconds	3
15 to under 20 seconds	10
20 to under 25 seconds	1

What is the approximate average number of seconds that this web page took to load on the iPhone?

13.7

12.5

11.9

15.0