If P : Q = 1 : 5 and Q : R = 3 : 2, then what is (P + Q) : (Q + R)?

1.	If P : Q = 1 : 5 and Q : R = 3 : 2, then what is (P + Q) : (Q + R)?
A.	6 : 7
B.	5 : 7
C.	18 : 25
D.	13 : 18
Answer» D. 13 : 18

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If P : Q = 1 : 5 and Q : R = 3 : 2, then what is (P + Q) : (Q + R)?

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