Question

In a group of 120 people, 90 have an age of more 30 years, and the others
have an age of less than 20 years. If a person is selected at random from
this group, what is the probability the person's age is less than 20?

Answer 1

90 peoples have age more than 30 years and total are 120 peoples

90 peoples have age more than 30 years and total are 120 peoplesso the people whose age less than 20 are=120-90

90 peoples have age more than 30 years and total are 120 peoplesso the people whose age less than 20 are=120-90 =30

the probability the person's age is less than 20=30/120

=0.25

Answer 2

Answer:

1/4

Step-by-step explanation:

total people =120

people have an age more than 30=90

people have an age less than 20=120-90=30

P(the person's age is less than 20)=30/120=1/4