Answer:
Sources of info are utilized in fixed extents of five units of L and 4 units of K. In this way, the creation capacity can be composed as:
q = min {4L, 5K}
Along these lines, q = 4L = 5K
Along these lines, L = q/4 and K = q/5
Cost,
C = wL + rK = [w(q/4)] + [r(q/5)]
C = 0.25wq + 0.2rq
C = (0.25w + 0.2r)q
Along these lines, C(q) = (0.25w + 0.2r) q