Question

TODAYS RIDDLE
How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. Iam twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put togeather.
How old is the man's son?
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Answer 1

Answer:

5 years

Step-by-step explanation:

let daughter's age be x

son's age= 5x

wife's age=25x

his age= 50 x

sum= 81= x+5x+25x+50x

hence, x=1

now daughter's age is x=1

sons' age is 5x=5

son is 5 years old

hope it helps you