If P-Q-R and d(P, Q) = 5 , d(P,R) = 20, then find d(Q,R).
(A) 5 (B) 10 (C) 15 (D) 25
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Answer:
Option
C) 15
Step-by-step explanation:
PQ + QR = PR
5 + QR = 20
QR = 20 - 5
QR = 15
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