There are 20 red marbles and 10 blue marbles mixed together in a cloth bag.If you reach in and pull out a marble, without looking, what are the odds of selecting a blue marble? a. 1:2
b. $1 : 3$
c. $1 : 4$
d. $1 : 5$

Name: There are 20 red marbles and 10 blue marbles mixed together in a cloth bag.If you reach in and pull out a marble, without looking, what are the odds of selecting a blue marble? a. 1:2 b. $1 : 3$ c. $1 : 4$ d. $1 : 5$
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The Answer is A

There Are 20 Red Marbles and 10 Blue Marbles Mixed 1:31 : 31:3

There Are 20 Red Marbles and 10 Blue Marbles Mixed $1 : 3$