P ∶ Q = 2 3, Q R = 4 5 மற்றும் R S = 2 1 எனில், P R S இன் மதிப்பு என்ன?

1
10 ∶ 5 ∶ 4
2
16 ∶ 30 ∶ 15
3
9 ∶ 10 ∶ 15
4
12 ∶ 25 ∶ 10

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