Question

The average age of the first three children in a class is 13.5 years. If the sum
the ages of the first two children is 25 years, then what is the age of the
third child?
A) 15.5 years
(B) 13.2 years
(C) 12.8 years
(D) 12 5 years​

Answer 1

Answer:

a) 15.5 years

Step-by-step explanation:

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Answer 2

A) 15.5 years

Step-by-step explanation:

Average age of the first three children = 13.5 years.

Sum of ages of the first three children = 13.5 ×3 = 40.5 years.

Sum of ages of the first two children

= 25 years.

Age of the third child

= 40.5 - 25 = 15.5 years