The national average utility cost is $270.48 per month. if the average phone bill is 12.6% of the total amount and the average utility cost for dallas is $326, what would be the cost of a typical dallas home phone bill?

The cost of a typical Dallas home phone bill can be calculated by multiplying the given average utility cost for Dallas by the decimal equivalent of the given percentage. 
                                   average phone bill cost  = ($326)(0.126)
                                    average phone bill cost = $41.076
Thus, the phone bill of average Dallas home is approximately $41.076. 

$18.25 ($365 divided by 20)