Answer
P(blue)=3/8
Work Step by Step
Find the area of each region:
White area=4 square units
Red area=3 square units
Blue area=6 square units
Green area=3 square units
Total area=16 square units
P(events)=$\frac{numberoffavorableoutcomes}{numberofpossibleotcomes}$
The blue is 6 square units so it is the number of favorable outcomes. The area is 16 square units in total so this is the number of possible outcomes.
P(blue)=$\frac{6}{16}$ -simplify-
p(blue)=$\frac{3}{8}$