The probability for a boy is 8/12 and the girls is 4/12 so that's a 4/12 diffrence
well, first off, let's notice that we have a trapezoid with a rectangle inside it, so the rectangle is really "using up" area that the trapezoid already has.
now, if we just get the area of the trapezoid, and then the area of the rectangle alone, and then subtract that area of the rectangle, the rectangle will in effect be making a hole inside the trapezoid's area, and what's leftover, is the shaded section, that part the hole is not touching.

Answer:
55%
Step-by-step explanation:
The blood that runs through the veins, arteries, and capillaries is known as whole blood, a mixture of about 55 percent plasm