Suppose a firm produces three outputs, y1, y2 and y3, with three inputs z1,z2 and z3. The input-requirement matrix is given by A = [ (3 12 )(2 5 1)( 1 1 3) ] If the firm produces 10 units of y1, 20 units of y2 and 10 units of y3, how much of z1,z2 and z3will require?