Answer:
Multiplication
Step-by-step explanation:
P = Parentheses
E = Exponents
M/D = Multiplication/Division
A/S = Addition/Subtraction
If you have both multiplication/division or addition/subtraction left, ALWAYS work left to right.
Since there are no parentheses or exponents you do the multiplication first
Let A be the event 'made by Apex and defective':
P(A) = 0.67 x 0.11 = 0.0737
Let B be the event 'made by B-ink and defective':
P(B) = 0.33 x 0.06 = 0.0198
Let C be the event 'made by Apex or B-ink and defective':
P(C) = P(A) + P(B) = 0.0737 + 0.0198 = 0.0935
P(defective and made by Apex) = 0.0737/0.0935 = 0.788
The answer is 0.788 or 78.8%.
Imagine a ladder leaning against the wall and you know the height of the ladder and its distance from the wall and you had to find out the height you could use pythagorean theorem here
