A married couple and their 6 children are ordering some pizza. If the couple want 3 slices each and the children want 1 slice each, how many 4-slice pizzas should they order? Think carefully first, then make a decision:
The couple want 3 slices each for a total of 2 * 3 = 6 slices. The children want 1 slice each for a total of 1 * 6 = 6 slices. They want 6 + 6 = 12 slices in total. Each pizza has 4 slices so they need 12 / 4 = 3 pizzas. So, the answer is 3.