Feature reporters trying to personify economic hard times will often profile a family no longer able to get by on an income that only a short time before might have seemed more than adequate. These stories, though, invariably generate a counterstorm of protest, evoking little sympathy from those making do on even less. Kelley's title may have the same effect, but she introduces a "new math" to show that there are, in fact, many hidden costs involved with second incomes; and she effectively demonstrates that one plus one does not equal two in a dual-income household. Chapters on the costs of child care, personal upkeep, transportation, lunches and coffee breaks, inefficient and hurried shopping, time-saving conveniences, self-rewards, taxes, etc., help calculate the added expenses a second wage-earner can incur, so that couples can compare costs versus benefits. Kelley offers helpful, eye-opening observations.