4. A decision at the margin

Juanita is a hard-working college sophomore. One Tuesday, she decides to work nonstop until she has answered 100 practice problems for her economics 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.

TimeTotal Problems Answered8:00 AM09:00 AM4010:00 AM7011:00 AM90Noon100Use the table to answer the following questions.

The marginal, or additional, gain from Juanita's first hour of work, from 8:00 AM to 9:00 AM, isproblems.

The marginal gain from Juanita's third hour of work, from 10:00 AM to 11:00 AM, isproblems.

4. A decision at the margin Juanita is a hard-working college sophomore. One Tuesday, she decides to work nonstop until she has answered 100 practice problems for her economics 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 Answered 8:00 AM 0 9:00 AM 40 10:00 AM 70 11:00 AM 90 Noon 100 Use the table to answer the following questions. The marginal, or additional, gain from Juanita's first hour of work, from 8:00 AM to 9:00 AM, is 40 problems. The marginal gain from Juanita's third hour of work, from 10:00 AM to 11:00 AM, is 20 problems