Total number of marble = 5 + 4 + 9 =18
Probability = required outcome / all possible outcome
Number of red marble = 5
p( drawing a red marble) = 5/18
Number of blue marble= 9
p(drawing a blue marble after drawing a red marble)= 9/17
p( drawing a red marble and then a blue marble if marble are not replaced) = 5/18 x 9/17
= 45 / 306
But we are to round to the nearest of tenth of percentage
Hence 45/306 = 45/306 x 100% = 14.7%
