Question

Alia is 9 years older than her twin brothers if there x years old find the mean age of 3 children in simplest terms​

Answer 1

age of alia's first brother= x

age of alia's second brother=x ( as both are twin)

age of alia = x+9

mean of three children = sum of their age/ no. of children

= x+x+x+9/3

=3x+9/3

=x+3 ans

Answer 2

Step-by-step explanation:

HEY MATE YOUR ANSWER IS HERE ^_^

the age of twin brother is x

the age of alia is (x + 9)

mean age of 3 children = [x + x + ( x + 9 )]/3.

= ( 3x + 9 )/3

= (x + 3) years

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