Ken is x years old. Liam is (x + 4) years old. Tina is 3x years old. Write an expression, in terms of x, for the mean of their ages.

asked Feb 25, 2022 105k views

2 votes

Ken is x years old.

Liam is (x + 4) years old.
Tina is 3x years old.

Write an expression, in terms of x, for the mean of their ages.

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3 votes

(X +(x + 4) +3x)/3 = (5x +4)/3

Add the ages together and divide by the number of people to get the mean.

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