### Instruction: a and b can together finish a work in 30 days . they worked together for 20 days and then b left . after another 20 days , a finished the remaining work . in how many days a alone can finish the job ? Let's write a Python program to solve it.### Response: n0 = 30.0
n1 = 20.0
n2 = 20.0
t0 = n0 * n2
t1 = n0 - n1
answer = t0 / t1
print(answer)