In a project network, Activity A has a duration of 4 days, a…

In a project network, Activity A has a duration of 4 days, and Activity B (which depends on A) has a duration of 6 days.If Activity A starts at Day 0, and Activity C also depends on A and finishes at Day 7, what is the Earliest Start (ES) for Activity D, which depends on both B and C?   Just put in a number with no quotation marks or words in the answer box — for example, 1.

A manufacturing firm is considering two automation projects,…

A manufacturing firm is considering two automation projects, Alpha and Beta, both requiring an initial investment of $200,000.Expected cash inflows are shown below: Year Alpha ($) Beta ($) 1 40,000 70,000 2 60,000 60,000 3 80,000 40,000 4 90,000 30,000 The firm’s liquidity policy requires projects to recover their investment in ≤ 3.5 years (simple payback, no discounting). Based on this criterion, which project(s) should be accepted, and what is the payback period of the accepted project?