grand sons age - x
grandfather- y
father-z
X + y +z is equal to 140
If x is 1 month y is 1 year; if x is one day; z is one week Find x why z ages .
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The age of all three is 140 Years.
So, x + y + z = 140 years
The age of Grandson in number of months is equal to age of Grandfather in years.
So, 12*x = z (multiplied by 12 to convert year to month)
The age of Grandson in number of days is equal to age of father in weeks.
So, 365 * x = (365 * y) / 7
Which becomes => 7x = y
So, replacing value of y and z in original equation:
x + 7x + 12x = 140
20x = 140
SON = 7 years
FATHER = F = 7*7 = 49 years
GRANDFATHER = GF = 12*7 = 84 years
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