Question -
Answer -
Let present age of father = x years
and age of his son = y years
10 years ago,
FatherтАЩs age = x тАУ 10
and sonтАЩs age = y тАУ 10
x тАУ 10 = 12(y тАУ 10)
=> x тАУ 10 = 12y тАУ 120
=> x тАУ 12y = -120 + 10 = -110
=> x тАУ 12y = -110 тАж.(i)
10 years hence,
FatherтАЩs age = x + 10
and his sonтАЩs age = y + 10
10y = 120
y = 12
From (ii), x тАУ 2y = 10
x тАУ 2 x 10 = 10
=> x тАУ 24 = 10
=> x = 10 + 24
=> x = 34
Present age of father = 34 years
and age of his son = 12 years