Susan read 17 pages today. That’s 8 pages fewer than 1/3 of the pages she read yesterday.

How many pages did she read yesterday

1 answer

Let's call the number of pages Susan read yesterday X.

If Susan read 1/3 of X pages yesterday, then 1/3 of X is X/3.

If Susan read 8 pages fewer than 1/3 of X pages, then X/3 - 8 = 17.

Adding 8 to both sides of the equation, we get X/3 = 25.

Multiplying both sides of the equation by 3, we get X = 75.

Therefore, Susan read 75 pages yesterday. Answer: \boxed{75}.