Question

A bag contains 12 red, 12 blue, and 12 yellow marbles. What

is the probability of drawing 2 marbles of the same color out
of the bag?

Answer 1

Explanation:

let'x' number of additional red marbles be added to the bag. then the required probability will be12+x/32+x=3/5 60+5x=96+3x 2x=36 x=18