Question : If p : q : r = 2 : 5 : 3 and r : s = 6 : 5, then what is the value of p : q : r : s?
Option 1: 4 : 12 : 7 : 3
Option 2: 4 : 10 : 6 : 5
Option 3: 6 : 5 : 8 : 10
Option 4: 8 : 12 : 7 : 8
Correct Answer: 4 : 10 : 6 : 5
Solution :
p : q : r = 2 : 5 : 3 = 4 : 10 : 6
r : s = 6 : 5
⇒ p : q : r : s = 4 : 10 : 6 : 5
Hence, the correct answer is 4 : 10 : 6 : 5.
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