please can you solve them manually

1. Find an initial starting solution for the following transportation problems using: i. Northwest-corner method ii. Least-cost method iii. Vogel approximation method 2. Company XYZ forecasts its demands for the next six months to be: 200,260,240,340,190, and 150 for months 1 through 6 , respectively. It costs $7 to produce one unit with regular-time labor and $11 with overtime labor. During each month, regular production is limited to 200 units, and overtime production is limited to 100 units. It costs $1 per unit per month for the holding cost in inventory. Formulate a balanced transportation problem to minimize the total cost of meeting the demand on time