<PRE><B>Question 754283</B>
Cost per person varies inversely with the number of travellers
                   C = k/N
 (k is the constant of proportionality)
To find k put the known values into the formula
                   C = k/N
                  $22 = k/25
                 so k = 22*25
                    k = 550

     Therefore your formula is:-
                  C = 550/N

     To solve problem:

                  C = 550/N
                  C = 550/40
                  C = $13.75
Hope this helps
:-)

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