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 ?


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Answer 1

Answer:

30 of the 120 have an age less than 20 years

Randomly choosing one, and the probability is 1 in 4 or .25 or 25%

Answer 2

Answer:

0.25

120 people = total ;

90 people =average 30 years it means 90/120 =3/4 ….

others 4/4 -3/4 = 1/4 it means means %25 it means 25/100 = 0.25