A demographic survey of 100 families in which two parents were presen

Question

A demographic survey of 100 families in which two parents were present revealed that the average age, A, of the oldest child is 20 years less than 1/2 the sum of the ages of the two parents. If F represents the age of one parent and M the age of the other parent, then which of the following is equivalent to A ?

(A) (F + M - 20)/2

(B) (F + M)/2 + 20

(C) (F + M)/2 + 20

(D) F + M- 10

(E) F + M+ 10

(A) (F + M - 20)/2

(B) (F + M)/2 + 20

(C) (F + M)/2 - 20

(D) F + M- 10

(E) F + M+ 10

Bunuel · Answer

Check other  Age Problems  in our  Speial Questions Directory .

RLokesh · Answer

Bunuel : The Options B & C are repeated I guess.

The answer according to me is (F+M)/2 -20.

Bunuel · Answer

Thank you. Edited.

ScottTargetTestPrep · Answer

We can create the following equation:

A = (1/2)(F + M) - 20 = (F + M)/2 - 20

Answer: C

bumpbot · Answer

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A demographic survey of 100 families in which two parents were presen

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