Answers

2014-11-12T20:19:06+08:00
Let 'x' be the factor for the ratio to be expressed as 9x:7x
since the difference is 40 then,
9x - 7x = 40
2x = 40
x = 20
9x = 9(20)
      = 180
7x = 7(20)
     =140
Therefore the numbers are 180 and 140.
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