Question

Quéstion ⤵️

⇒ In a group of 120 people 90 have an age of more 30yrs and the other have age of less then 20 yr.if a person is selected at random from htis group .what is the probability the person's age is less than 20.

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Answer 1

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Step-by-step explanation:

simple way 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 very clear

Answer 2

Answer:

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