The average of the given base lengths is the length of the midsegment:
... (72 + 104)/2 = 176/2 = 88
QP is the bisector so QPM is half NPM or

Answer: I am in highschool and im doing this stuff. If you find out the answer let me know please.
6/10+7/12
=72/120+70/120
=142/120
=120/120+22/120
=1+22/120
=1+11/60
<em>*Good estimate would be 1+1/6 = 1.17</em>