Answer:
James has read 125 pages.
Step-by-step explanation:
To find the answer it is necessary to express the information given as an equation, in this case:
Where:
r represents the number of pages read by James,
75 is the number of pages read by Simon,
200 is the number of pages they have read together
Then, subtract 75 on both sides of the equation:
Thus, the number of pages read by James is 125.