Answer:
undefined! one cannot divide by 0
Step-by-step explanation:
It would be 16 minutes because you would divide 80 by 20 and you get 4 so now you multiply 4 by 4 and you get 16
![b\sqrt[n]{a}](https://tex.z-dn.net/?f=b%5Csqrt%5Bn%5D%7Ba%7D)
