Answer :
Set up a proportion.
2210/0.85 = x/1
Multiply 1 to both sides:
x = 2210 * 1/0.85
x = 2210/0.85
x = 2600
So Isaiah read 2600 pages.
2210/0.85 = x/1
Multiply 1 to both sides:
x = 2210 * 1/0.85
x = 2210/0.85
x = 2600
So Isaiah read 2600 pages.