Question

A bag contains 9 green marbles and 12 white marbles. In simplest form, what are the odds in favor of drawing a white marble?

A. 4:7
B. 4:3
C. 1:7
D. 3:4
(Please give a explaination)

Answer 1

12/21

or

4/7

12/21 simplified

you need white marbles over all marbles