Partial information about Project GX152 is given below. Activity G, 47 days, IP = not given Activity H, 47 days, IP = not given Activity K, 35 days, IP = not given Activity M, 21 days, IP = G, H Activity N, 23 days, IP = G Activity P, 29 days, IP = H, K Activity Q, 35 days, IP = N, P Activity R, 22 days, IP = P You also know the following: LF of M = 136, LF of Q = 255, LF of R = 235. What is LS of H = ? Type a value only