PLEASE ANSWER A & B USING A SOLVER AND EXCEL ONLY. I WILL GIVE AN UPVOTE IF ANSWERED CORRECTLY, PLEASE ALSO HIGHLIGHT WITH LIGHT BLUE THE GIVEN AND YELLOW FOR THE FINAL ANSWERS. THANK YOU

Case 3-5 Assigning Students to Schools The Springfield School Board has made the decision to close one of its middle schools (sixth, seventh, and eighth grades) at the end of this school year and reassign all of next year's middle school students to the three remaining middle schools. The school district provides busing for all middle school students who must travel more than approximately a mile, so the school Page 120 board wants a plan for reassigning the students that will minimize the total busing cost. The annual cost per student for busing from each of the six residential areas of the city to each of the schools is shown in the following table (along with other basic data for next year), where 0 indicates that busing is not needed and a dash indicates an infeasible assignment. Percentage Percentage Percentage in 6th in 7th in 8th Grade Grade Grade Area Number of Students 450 600 1 32 38 30 Busing Cost per Student School 1 School 2 School 3 $300 $ 0 $700 400 300 200 200 500 2 28 35 500 37 30 3 550 32 38 600 4 28 40 32 350 500 5 39 34 27 O 400 6 450 34 28 38 500 300 0 School capacity: 900 1,100 1,000 The school board also has imposed the restriction that each grade must constitute between 30 and 36 percent of each school's population. The above table shows the percentage of each area's middle school population for next year that falls into each of the three grades. The school attendance zone boundaries can be drawn so as to split any given area among more than one school, but assume that the percentages shown in the table will continue to hold for any partial assignment of an area to a school. You have been hired as a management science consultant to assist the school board in determining how many students in each area should be assigned to each school. a. Formulate and solve a linear programming model for this problem. b. What is your resulting recommendation to the school board