May someone help. I cannot see heads or tails on this one.
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Stem rephrase: You want to know PRS-PQR=?
Answer will either be D or E since both statements give us the same information
1) Tells us QPR = 30 - SUFFICIENT
2) Tells us QPR = 30 (PQR + PRQ = 150, so 180-PQR+PRQ = 30) -SUFFICIENT
How? Set up two equations:
RPS+30+PQR=90
RPS+PRS=90, or RPS=90-PRS
90-PRS+30+PQR=90
Solve: PRS-PQR=30
Answer D
