Question

Point A is on a number line halfway between −17−17 and 55. Point B is halfway between point A and 0. What integer does the point B represent?

Answer 1

Find A first by using formula: (a+b)/2= midpoint
so: A = [(-17)+(55)]/2
         = 36

Now find B using midpoint formula:
B: (a+b)/2 
=36+0/2
=18