a school has 11 maths 8 physics and 5 chemistry teachers each teacher can teach 3 subjects max what is he minimum number of teachers required
n0 = 11.0
n1 = 8.0
n2 = 5.0
n3 = 3.0
t0 = n0 + n1
t1 = n2 + t0
answer = t1 / n3
print(answer)