Answer:
The probability that the next page she turns will contain an advertisement is:
40%
Explanation:
As it is given that there are 384 of the 960 pages that contain an advertisement.
Now we are asked to find the probability that the next page she turns will contain an advertisement:
We know that probability of an event is defined as:
Proabability=(Number of favourable outcome)/(Total number of outcome)
As total number of outcome=960
and number of favourable outcome=384
Hence, the probability that the next page she turns will contain an advertisement is given by:

Hence, the percent probability is given by: 40%.