In the diagram below of triangle PQR, S is a midpoint of PQ and T is a midpoint of QR. If


In the diagram below of triangle PQR, S is a midpoint of PQ and T is a midpoint
of QR. If ST = 95 – 10x, and PR = 55 – 5x, what is the measure of ST?
Q
S
T
P
R
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