FERMAT 2011 Problem 5

Past Contests FERMAT FERMAT - 2011
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1

In the diagram, S lies on RT,\angle{QTS}=40,QS=QT, and \triangle{PRS} is equilateral. The value of x is

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Answer Choices
A. 50
B. 60
C. 80
D. 90
E. 100