The chapter is 8pages long. kosta read 1/4 of the chapter aloud. then christina read three pages to the class. How many pages have they red so far.

Number of pages that the chapter has = 8

Number of pages of the chapter that Kosta read = (1/4) * 8

= 1 * 2

= 2

The number of pages of the chapter read by Christina = 3

Then

The total number of pages of the

chapter read by both of them = 2 + 3

= 5

So the total number of pages of the chapter that has been read by Kosta and Christina is 5. I hope the procedure is clear enough for you to understand.