Question: 1. Solve for x and y if
420 = 4x + 5y and 600 = 2x + 9y
2. A firm produces the two goods A and B using inputs K and L. Each unit of A requires 2 units of K plus 6 units of L. Each unit of B requires 3 units of K plus 4 units of L. The amounts of K and L available are 120 and 180, respectively. What output levels of A and B will use up all the available K and L?
3. Solve for x and y when
160 = 8x - 2y and 295 = 11x + y