A. Because if they give you how many children,c, you add nine, which gives you nine more than them parents.
Regular= 3/5 equivalent= 6/10 just multiply the top and bottom by the same number.
The given scenario falls under the category of conditional probability. There are a total of 56 people in the fishing group described above. The probability that the a person caught a fish and fished from a boat is 24/56. The probability that he fished from a boat is (24+11)/56. For the conditional probability in this item is,
P = (24/56) / ((24+11)/56) = 24/35 = 0.69