Question

David loves to read. He is able to read 90 pages in 3 hours and 120 pages in 4 hours.

Answer 1

A 30 pages per hour

Because 3•3=9 and add a 0 to 3 30 pages each hour

Answer 2

A.
He reads 30 pages per hour.
90/3=30
120/4=30
To for every 1 hour he reads, he is able to read 30 pages.