SOLUTION: In 2 years I will be 5 times as old as my son and half as old as my father. My father just turned 78. How old is my son?
(A) 5 (B) 6 (C) 7 (D) 8 (E) 9
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(A) 5 (B) 6 (C) 7 (D) 8 (E) 9
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Question 305331: In 2 years I will be 5 times as old as my son and half as old as my father. My father just turned 78. How old is my son?
(A) 5 (B) 6 (C) 7 (D) 8 (E) 9 Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! let my son's age be x
after 2 years he will be x+2 years
My age will be 5 (x+2) years after 2 years
5(x+2) = 1/2 *(78+2) ( father's age after two years will be 78+2 years)
5x+10=40
5x= 30
x=6 son'sage now
