workers, that's all there is to it," Felix admitted. Ingrid filled in the details. "Here's our problem exactly," she said. "We've already worked for two weeks, and estimate that it will take 30 more hours to finish. But with so much else to do, I can put in only 11 more hours and Felix car work only 10 more hours. So unless time stops-which it probably wont-we're in trouble- O Zara and Mendel agreed that the two young techno-wizards had a time problem on their hands. Felix added "Since we've fallen behind we want to ask some of our pals to pitch in. We know we can quickly teach them to do what we need whether it's measuring, building, painting, or testing We estimate that I's reasonable to ask each friend for 1½ hours of their time. They do it, we think. I might cost us cupcakes all around, but we think it's our only hape, Ingrid explained But how many kids will we need?" Felix asked. We're stumped. Yeah, how many cupcases will felix need to Lake?" added Ingrid sly y