a is two years older than b who is twice as old as c . if the total of the ages of a , b nd c be 27 , then how old is b ?
n0 = 27.0
t0 = 1.0 + 4.0
t1 = n0 - 2.0
t2 = t1 * 2.0
answer = t2 / t0
print(answer)