X = 12400
20/100 = 1/5
2480 x 5 = 12400
Sorry I have to go to baseball bye
Total number of marbles = 17
3 are black.
Not black = 17 - 3 = 14.
Probability of not black = Number not black / Total
= 14 / 17
C=<span>30000
and the other one do u want me to solve for x or r?</span>
