The coordinates of the midpoint are the average of the coordinates of the given points.
So, the x coordinate of the midpoint is the average of the x coordinates of the given point:

And similarly, the y coordinate of the midpoint is the average of the y coordinates of the given point:

So, the midpoint is the point 
" 0.83 " MEANS " 83/100 ". They are identical quantities, because they are the SAME quantity.
They would each get one and a half bagels because 6/4= 1.5