Answer :
Total number of balls = 8+2 = 10.
Chance of drawing a blue marble = total number of blue ball in bag
-------------------------------------------------
total number of balls in bag
= 2
-------
10
= 1
---------
5
Hope this helps!
Chance of drawing a blue marble = total number of blue ball in bag
-------------------------------------------------
total number of balls in bag
= 2
-------
10
= 1
---------
5
Hope this helps!