Mathematics for IGCSE & O level - Proportion (Section 3 - No. 32)
If the number of workers on a project is doubled, what happens to the time required to complete the project (assuming the amount of work remains constant)?
The time doubles
The time halves
The time remains the same
The time is quartered
Giải thích
If you double the number of workers, you will half the amount of time required to finish the project.