### Instruction: a person can swim in still water at 8 km / h . if the speed of water 4 km / h , how many hours will the man take to swim back against the current for 8 km ? Let's write a Python program.### Response: n0 = 8.0
n1 = 4.0
n2 = 8.0
t0 = n0 - n1
answer = n2 / t0
print(answer)