Let the age of Bharath be x.
Age of Laxman = x + 4
Age of Ram= x + 4 + 5
Equation :
(x) + (x + 4) +( x + 4 + 5) = 61
3x + 13 = 61
3x = 61 - 13 ( by transposition)
3x = 48
x = 48/3 ( by transpostion)
x = 16
Age of Bharat = x = 16
Age of Laxman = x + 4 = 16 + 4 = 20