Exams › SSC CGL (Prelims) › General

Given P : Q = 5 : 3, Q : R = 4 : 7, and R : S = 2 : 3, determine the ratio P : S.

1. 20 : 63
2. 40 : 63
3. 35 : 72
4. 15 : 28

Correct answer: 40 : 63

Solution

Chaining the ratios by equalising Q and R gives P : Q : R : S = 40 : 24 : 42 : 63, so P : S = 40 : 63.

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