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Subject :IMO    Class : Class 8

In the given figure, line RT is drawn parallel to SQ. If ∠QPS = 100°, ∠PQS = 40°, ∠ PSR = 85° and ∠QRS = 70°, then ∠QRT = ________.


A45°
B65°
C85°
D90°


please solve this qwuestiom

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