11.2 If the two were to live together, the most efficient way to resolve the telephone problem would be as before, for Betty to give up reasonable access to the phone. But on top of that cost, which is $150, Betty would also bear a $60 cost from the loss of her privacy. The total cost of their living together would thus be $210 per month. Since that amount is greater than the $200 saving in rent, the two should live separately. LO2