You need a map or a picture of what you are talking about so i can help find you the answer so please take a picture and post it so i can see it.
Since only half of the 8 white eggs are cracked, then there are 4 cracked, white eggs. The probability of drawing one of these 4 from the 18 total eggs is 4/18 which simplifies to 2/9 or 22%.
I hope this was quick enough haha, have a nice day and remember that Jesus loves you <3