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    Question

    If P: Q = 4: 5 and Q: R = 5: 7, then find the value of

    (P + Q): (Q + R): (R + P).
    A 2:6:7 Correct Answer Incorrect Answer
    B 5:3:2 Correct Answer Incorrect Answer
    C 4:6:5 Correct Answer Incorrect Answer
    D 3:5:1 Correct Answer Incorrect Answer

    Solution

    P: Q = 3:5 And Q: R= 5:7 SO┬а P: Q: R=3:5:7 So, Now┬а (P+Q) :(Q+R) :(R+P) = (3+5) :(5+7) :(3+7) =8:12:10 = 4: 6:5

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