temi10152 temi10152

09-05-2021
Mathematics

contestada

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.

Respuesta :

deb0428 deb0428

09-05-2021

(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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