Mathematics for IGCSE & O level - Proportion (Section 3 - No. 11)
Which of the following situations demonstrates inverse proportion?
The cost of apples and the number of apples.
The number of workers and the time it takes to build a wall.
The number of hours worked and the amount earned (hourly wage).
The height of a plant and the amount of sunlight it receives.
Обяснение
If the number of workers increases, the time taken to build a wall decreases (assuming the amount of work remains constant).