Answer:
First start = 20 and current = 4
So start = current is 20 = 4
Then, current = current + 1 is 4 = 4 + 1 ( 5 )
After that, console log(start) makes start, which is so far still 20
Then, console log(current) makes current, which is so far mostly 4,
So I think the answer is 20 4
Have a wonderful day! :-)