Module One Quiz Carlos is a hard-working college sophomore. One Thursday, he decides to work nonstop until he has answered 250 practice problems for his economics course. He starts work at 8:00 AM and uses a table to keep track of his progress throughout the day. He notices that as he gets tired, it takes him longer to solve each problem. Time Total Problems Answered 8:00 AM 0 9:00 AM 100 10:00 AM 175 11:00 AM 225 Noon 250 Use the table to answer the following questions. The marginal, or additional, gain from Carlos's second hour of work, from 9:00 AM to 10:00 AM, is problems. The marginal gain from Carlos's fourth hour of work, from 11:00 AM to noon, is problems