Working Together, Two People Can Complete a Task in 4

question 76

Multiple Choice

Working together, two people can complete a task in 4.5 hours. Working alone, one person takes 6 hours longer than the other. Working alone, how long (in hours) would it take each person to complete the task? Round your answer to two decimal places.

• A) 6.91 hours and 6.91 hours
• B) 5.47 hours and 11.47 hours
• C) 6.91 hours and 12.91 hours
• D) 6.47 hours and 11.47 hours
• E) 3.45 hours and 9.45 hours

---

Definitions:

Phosphoglyceraldehyde (PGAL)

A three-carbon molecule formed in the Calvin cycle of photosynthesis and in glycolysis; involved in sugar metabolism.

Phosphoglycerate (PGA)

A three-carbon molecule that plays a critical role in both the glycolysis pathway and the Calvin cycle in photosynthesis.

Light-Independent Reactions

The series of biochemical reactions in photosynthesis that do not require light to proceed, occurring in the stroma of chloroplasts to synthesize glucose.

Photorespiration

Inefficient sugar-production pathway initiated when rubisco attaches oxygen instead of carbon dioxide to RuBP (ribulose bisphosphate).