Adults Children Total A total of 200 people attend a
party, as shown in the table.
80
Male
Female
120
Total
150
50
200
A person is selected at random
to win a prize. The probability of
selecting a female is 0.6. The
probability of selecting a child,
given that the person is female,
is 0.25. The probability of
selecting a male, given that the
person is a child, is 0.4.
How many male adults were there?
9.
50
60
40
30
O 70