Question

Is there anyone who can help me.​

Answer 1

there are 12 white marbles are there

probability of blue marbles is 1/3

1/3=blue /54

then blue = 54/3=18

probability of green marbles is 4/9

4/9= green/54

green=54(4)/9

green=24

green + blue marbles =24+18=42

the NV white marbles = 54-42=12