5
ALMultiple Choice

Direct, Inverse, and Joint Variation

Question 5 • IASD Precalculus 2nd Quarter - Wingerter 2025-26

If 3 workers can paint a room in 2 hours, then approximately how long does it take 4 workers to paint the same room? Assume the time needed to paint the room is inversely proportional to the number of workers.

Answer
A
1 hour
B
3 hours
C
1.5 hours
D
2 hours

Explanation

The total work is 3 workers × 2 hours = 6 worker-hours. With 4 workers, the time is 6 ÷ 4 = 1.5 hours, so the correct choice is 1.5 hours.

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