medium · GMAT Quant
A project manager is analyzing a team's efficiency across two tasks. Task 1 takes x hours and Task 2 takes y hours.
Which of the following statements must be true if the average time per task is 10 hours and x is at least 4 hours greater than y?
- x is at least 12.
- y is at most 6.
- x is exactly 14.
- y is greater than 10.
- x + y is greater than 20.
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