the age of somu is one - third his father ' s . 6 years back he was one - fifth of his father ' s age . what is his persent age ?
n0 = 6.0
t0 = 1.0 + 4.0
t1 = n0 * t0
t2 = t0 - 3.0
t3 = t1 - n0
answer = t3 / t2
print(answer)