Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal.

To read at least 200 pages in the first 5 days of the week, Sari needs to read 200 / 5 = <<200/5=40>>40 pages per day. Answer: \boxed{40}.

To find out how many pages Sari should read per day, we need to divide the total number of pages she wants to read (200) by the number of days she has (5):

200 pages ÷ 5 days = 40 pages per day.

So, Sari should read an average of 40 pages per day to meet her goal.

To calculate the average number of pages Sari should read per day to meet her goal, we can use the formula:

Average = Total pages / Number of days

In this case, Sari wants to read at least 200 pages in the first 5 days of the week. So, the total pages she needs to read is 200 pages, and the number of days is 5.

Average = 200 pages / 5 days

Therefore, to meet her goal, Sari should read an average of 40 pages per day.