[简答题]计算题：某版面原设计版心为5号字27行，行空为1/2个字高，如果现在要在此版心大小上排30行（5号字），行空应是多少？

An earlier survey identified 22 "coping" strategies that parents resorted to when they couldn’t sit down with their families to eat a meal that was prepared at home. These including skipping meals altogether, eating at work, eating in the car, ordering take-out on the way home from work, choosing easy and quick-fix meals to serve or overeat after a missed meal.
The 69 low-income wage earners in the first study admitted to skip meals or not eating at home because of time constraints and for financial reasons. In the current study, we found that half of the mothers and fathers surveying depended on 12 of the 22 mealtime coping strategies. We know that when people cat together as family, diets of both the parents and the children tend to be better. But often our jobs don’t allow us to eat together at home as often as we’d like.
The issue is not simply a matter of what we eat, but how we eat. Long and regular work hours are a primary cause