A project manager is analyzing resource utilization across three software development teams: Team A, Team B, and Team C. The manager wants to determine which team has the highest efficiency in terms of lines of code (LOC) produced per developer-hour. The data is as follows: Team A: 15,000 LOC, 10 developers, 160 hours/developer Team B: 20,000 LOC, 12 developers, 150 hours/developer Team C: 18,000 LOC, 9 developers, 170 hours/developer Which team has the highest LOC per developer-hour?
- ATeams A and C have the same efficiency.
- BTeam B
- CTeam A
- DTeam C
Show answer & explanationAnswer & explanation
Correct answer: C. Team A
To determine the efficiency, calculate the total developer-hours for each team and then divide the total LOC by the total developer-hours. Team A: 15,000 LOC / (10 * 160 hours) = 9.375 LOC/hour. Team B: 20,000 LOC / (12 * 150 hours) = 11.11 LOC/hour. Team C: 18,000 LOC / (9 * 170 hours) = 11.76 LOC/hour. Oops, I made a mistake in the calculation. Let's re-calculate. Team A: 15000 / (10 * 160) = 15000 / 1600 = 9.375. Team B: 20000 / (12 * 150) = 20000 / 1800 = 11.11. Team C: 18000 / (9 * 170) = 18000 / 1530 = 11.76. My previous answer B was incorrect. Based on these calculations, Team C has the highest efficiency. The correct answer should be C. I will update the answer and explanation accordingly.
Why the other options are wrong
- A. The efficiencies are different for all teams.
- B. Team B has 11.11 LOC/developer-hour.
- D. Team C has the highest efficiency at 11.76 LOC/developer-hour.
Efficiency Metric
An efficiency metric quantifies the output achieved per unit of input, helping to compare the productivity of different entities.
- It's a ratio of output to input.
- Higher values generally indicate better efficiency.
- Requires consistent units for comparison.
Memory trick: Efficiently Get Output by Dividing by Input!