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    4. Ratio and proportion
    5. The sum of three numbers is 189. If the ratio of the first to the second is 3:4 and that of second t

    Question

    The sum of three numbers is 189. If the ratio of the

    first to the second is 3:4 and that of second to the third is 5:7 then the second number is? 
    A 70 Correct Answer Incorrect Answer
    B 64 Correct Answer Incorrect Answer
    C 105 Correct Answer Incorrect Answer
    D 60 Correct Answer Incorrect Answer

    Solution

    Let the three numbers be A, B and C. Now, A:B = 3:4 & B:C = 5:7 A: B: C = 15:20:28 A+B+C = 189 15k + 20k + 28k = 189 63k = 189 k = 3 Second number = B = 20 x 3 = 60

    Practice Next
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    Relevant for Exams:

    • RBI Grade B
    • NABARD GRADE A
    • SEBI Grade A
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    • FCI Assistant Grade 3
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    • NABARD GRADE A

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