Which formula gives the coordinates of the midpoint of the segment connecting points (a, b) and (c, d)?

When looking for the point precisely in between two different points, the average of both coordinate points are taken. Since you are given 2 pairs of x and y coordinates, you just have to look for the average of the x-coordinates, and the average of the y-coordinates. To illustrate:

Midpoint = ( (a + c)/2 , (b + d)/2 )

The correct awnser is 29.76 pounds.