A) 3 : 5
B) 5 : 3
C) 7 : 15
D) 7 : 21
Correct Answer: B
Solution :
p : q = 7 : 9 q : r = 15 : 7 Then, \[p:r=\frac{p}{q}\times \frac{q}{r}\] \[=\frac{7}{9}\times \frac{15}{7}=5:3\]You need to login to perform this action.
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