### Instruction: a man has some hens and cows . if the number of heads be 50 and the number of feet equals 144 , then the number of hens will be ? Let's write a program.### Response: n0 = 50.0
n1 = 144.0
t0 = n0 * 4.0
t1 = t0 - n1
answer = t1 / 2.0
print(answer)