Critical paths and float

Critical paths and float Quiz

Spec 4.3–4 · Edexcel A-Level Further Maths: Quiz

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  1. 1. Two activities end at event k. One starts from an event with earliest time 6 and lasts 5 days; the other starts from an event with earliest time 8 and lasts 2 days. What is the earliest time at k?

    • A. 10
    • B. 11
    • C. 13
    • D. 16

  2. 2. In a backward pass, how is the latest event time at an event found?

    • A. The largest of l(j) minus duration
    • B. The average of the values
    • C. The earliest event time
    • D. The smallest of l(j) minus duration

  3. 3. An activity has e(i) = 4, l(j) = 11 and duration 5. What is its total float?

    • A. 2
    • B. 7
    • C. 6
    • D. 1

  4. 4. The durations total 45 days and the minimum project time is 20 days. What is the lower bound for the number of workers?

    • A. 2
    • B. 2.25
    • C. 3
    • D. 4

  5. 5. An activity has a total float of zero. What is it called?

    • A. A dummy
    • B. Critical
    • C. A successor
    • D. Spare

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