need help with this

tired it takes her longer to solve each problem. Time Total Problems Answered 2:00 AM 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 Rina's first hour of work, from 8:00 AM to 9:00 AM, is problems. The marginal gain from Rina's third hour of work, from 10:00 AM to 11:00 AM, is problems. Later, the teaching assistant in Rina's chemistry course gives her some advice. "Based on past experience," the teaching assistant says, "working on 37 5 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