The confusion is with the presentation of the question. Both Nataliya and Andrew are right, and both a little wrong. Emilia from Chino first says that the sum of the digits from TWO pages was 19 (heading in green), but then asserts a single page in the text. There is no correct answer possible, as the student presents two different questions whose answers are exclusive. Both tutors realized the problem ran to the 99, x00 moment, but each should have recognized the impossibility of providing a single correct answer. Andrew misses in that 100 does not satisfy the conditions in the text part of the question, and Natalya avoids the assertion in the heading that 2 pages, not one, are involved. However, Andrew stretches further than Natalya in that he apparently believes two pages can be read simultaneously. I wish that both tutors had rejected the question as unanswerable rather than provide solutions which satisfied no one.