what is the respective ratio between the total expenditure of all the businessmen together in 2005 and total expenditure of all the given businessmen together in 2007?

  • 12:11
  • 10:7
  • 8:7
  • 13:11
  • 16:13
  • Explanation:

    Expenditure in 2005 = 320+ 500+ 220

                                 = 1040

    Expenditure in 2007 = 140+ 300+ 440

                                  =880

    ∴ Required ratio = 1040 : 880

                            = 13 : 11

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