A user story was estimated at five ideal hours. On a normal eight hour working day, the team gets about four hours of actual work time. What would be the elapsed time required to complete the Story?

Question

Options

• AOne day and two hours
• BTwo days
• CFive hours

• A
  74% (49)
• B
  15% (10)
• C
  11% (7)

Explanation

Option A is correct because ideal hours measure pure focused work time, not clock time. With only 4 productive hours available per 8-hour day, completing 5 ideal hours requires 5 ÷ 4 = 1.25 days - which equals 1 full day (8 hours elapsed) plus 2 additional hours, totaling 1 day and 2 hours of elapsed time.

Option C (Five hours) is wrong because it confuses ideal time with elapsed time - you can't complete 5 hours of focused work in 5 clock hours when you only have 4 productive hours per day.

Option B (Two days) overcounts - two full days would give you 8 productive hours, but the story only requires 5 ideal hours, so you finish partway through the second day.

Memory tip: Think of it as a unit conversion - divide ideal hours by your daily productive hours to get days, then convert the decimal remainder back to clock hours. The formula is: elapsed time = ideal hours ÷ (productive hours/day).

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