Mathematics for IGCSE & O level - Ratio And Proportion (Section 4 - No. 41)
Which of the following represents inverse proportion?
The distance travelled by a car and the time taken to cover it
The number of workers and the time to complete a project.
The number of items purchased and their cost.
The amount of petrol needed and the distance traveled.
Explicaţie
As the number of workers increases, the project completion time decreases (or vice-versa).