Answer:
QR = TS = 25 cm
Step-by-step explanation:
Opposite sides of a parallelogram are equal.
So QR = TS
So 3x-5 = 2x+5
Subtracting 2x from each side gives x-5 = 5
So x = 10
Then QR = 30-5 = 25 cm
and TS = 20+5 = 25 cm