Please include formula and excel steps thank you

Problem 1 25 points total A scheduled flight connecting Seattle (SE) and London (LN) non-stop is about to take off. Based on the weather conditions, the precise route to be taken between SE and LN may vary, and the decision is made right before take-off time. The following network shows the possible routes in consideration. Nodes A, B, C, D, E, and F represent intermediate locations. 3.5 3.4 4.6 3.6 4.7 3.2 SE 3.6 B E LN TY 3.5 F It is the wind speed along each route greatly affect the flying time which is proportional to the fuel consumption. Based on current weather reports, the flying times (in hours) for this particular flight are shown next to the routes (arcs). The management team would like to choose a route that minimizes the fuel consumption. a. Formulate an LP model for this problem. (10 points) b. Implement your model in a spreadsheet and solve it. (15 points) c. What is the optimal solution/decision? (5 points)