जर P ∶ Q = 9 ∶ 1, Q ∶ R = 1 ∶ 8 आणि R ∶ S = 1 ∶ 10, तर अनुक्रमे P ∶ R ∶ S चे मूल्य किती असेल?

1
8 ∶ 9 ∶ 80
2
19 ∶ 18 ∶ 80
3
9 ∶ 8 ∶ 70
4
9 ∶ 8 ∶ 80  

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