Answer: She can read 17 and a half page in 25 minutes.
Explanation:
We assume that the number of pages is directly proportional to the number of minutes taken to read them.
Given : Adrianna can read 7 pages in 10 minutes.
Rate of reading=
(1)
Let x denotes the number of pages she read in 25 minutes.
Rate of reading =
(2)
From (1) and (2) , we have
[in direct variation ration remains constant.]

Hence, She can read 17 and a half page in 25 minutes.