The ES of an activity is 2 days, and the duration of the activity is 5 days. The LF for the activity is 8 days. What is the total float for this activity? 6 days 3 days 1 day 5 days Explanation: We can calculate float using the formula EF=ES+D=2+5=7 and LS=LF-D=8-5=3. The formula for Total float is LS-ES or LF-EF. The answer is 1 day. The answer is assuming using ZERO method but PMI standard is to use ONE standard, wherein EF = ES + DURATION - 1 Can someone please clarify?