May I ask why? I'm guessing you'd rather store p0 in a new variable and work with that instead but I'm curious as to your reasoning if the function is only small like this one.

Thanks for the reply but I don't understand. The description says, "your task is to find the sum of the minimum values in each row."

As I understand it, the minimum values of each row in the above test are 49, 82 and 17, of which the sum is 148, not 347. What am I missing?

All of the random tests failed for me. One of the tests tested for [[49, 136],[128,82],[17,83]]. It failed telling me 'Expected 148 to equal 347'. So 49 + 82 + 17 = 347? Or have I grossly misunderstood something?

I notice most solutions I've seen here so far tend not to declare interim variables such as:

const litersPerHour = 0.5;

Wondering what your thoughts are on using them vs omiting them?