Beth is a hard-working college freshman. one thursday, she decides to work nonstop until she has answered 200 practice problems for her chemistry course. she starts work at 8: 00 am and uses a table to keep track of her progress throughout the day. she notices that as she gets tired, it takes her longer to solve each problem. time total problems answered8: 00 am 09: 00 am 8010: 00 am 14011: 00 am 180noon 200use the table to answer the following questions. the marginal, or additional, gain from beth’s second hour of work, from 9: 00 am to 10: 00 am, isproblems. the marginal gain from beth’s fourth hour of work, from 11: 00 am to noon, isproblems. later, the teaching assistant in beth’s chemistry course gives her some advice. "based on past experience," the teaching assistant says, "working on 50 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour." for simplicity, assume students always cover the same number of pages during each hour they spend reading. given this information, in order to use her 4 hours of study time to get the best exam score possible, how many hours should she have spent working on problems, and how many should she have spent reading? 1 hour working on problems, 3 hours reading2 hours working on problems, 2 hours reading3 hours working on problems, 1 hour reading4 hours working on problems, 0 hours reading