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Home Aptitude Ratio and Proportion See What Others Are Saying!
  • Question
  • Of three positive numbers, the ratio of the first and second numbers is 3:4 & that of the second and third numbers is 5:6. The product of the second and third numbers is 4320. What is the sum of three numbers?


  • Options
  • A. 167
  • B. 177
  • C. 187
  • D. 197

  • Correct Answer
  • 177 

    Explanation

    Let the second & third numbers are 2x & 3x respectively.
    ATQ,
    5x*6x = 4320
    30*x*x = 4320
    x*x = 144
    x=12
    Hence, second number = 5x = 5*12 = 60
    Third number = 6x = 6*12 = 72
    Ratio of first & second number = ¾
    Hence, first number = ( ¾)*60 = 45
    Sum of these 3 numbers = 60+72+45 = 177

  • Tags: Bank Exams

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