Number of male members in health clubs A and C increased by equal number from 2011 to 2012. If the respective ratio between number of male numbers in health club A and that in C in 2012  is 13 : 10, what is the number of male members in health club C in 2012

  • 690
  • 750
  • 720
  • 740
  • 760
  • Explanation:

    Number of male members in health club A

    in 2011 = 3600×24/100=864

    Number of male members in health club C

    in 2011 = 3600×18/100 = 648

    Let the total number of increased members in health

    club A and C in 2012 = x

    According to question,

    864+x/648+x= 13/10

    8640+10x=13x+8424

    x=72

    ∴ Number of male members in health club C

    in 2012 = 648+72 = 720

     

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Number of male members in health clubs A and C increased by equal number from 2011 to 2012. If the r
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