A project has 79 activities but only 9 activities are discussed here. Activity K, duration = 36 days, IP = not given Activity Q, duration = 16 days, IP = not given Activity D, duration = 28 days, IP = not given Activity L, duration = 59 days, IP = K Activity P, duration = 37 days, IP = K, Q, D Activity A, duration = 59 days, IP = G Activity M, duration = 11 days, IP = L, P Activity N, duration = 11 days, IP = L, P Activity R, duration = 34 days, IP = P, A If ES(K) = 74, ES(Q) = 99, and ES(D) = 96, find EF(R)