If there is a point m on the line L, and Mn = 6cm is intercepted on the line L, and MP = 10cm is intercepted in the opposite direction from the point m, what is the distance between the midpoint of Mn and the midpoint of NP

If there is a point m on the line L, and Mn = 6cm is intercepted on the line L, and MP = 10cm is intercepted in the opposite direction from the point m, what is the distance between the midpoint of Mn and the midpoint of NP

Let Mn midpoint be a and NP midpoint be B
NP=MP+MN=10+6=16cm
MA=1/2×6=3cm
PB=1/2PN=8cm
PA=PM+MA=10+3=13cm
AB=PA-PB=13-8=5cm