Mathematics for IGCSE & O level - Proportion (Section 3 - No. 23)
Which of the following situations *best* illustrates inverse proportion?
The distance travelled by a car at constant speed and the time taken
The number of workers painting a house and the time taken to paint the house
The amount of money earned and the number of hours worked
The weight of apples and the number of apples you buy.
คำอธิบาย
As the number of workers increases, the time taken to complete the job decreases.