A simple machine helps a person in doing
Option:(b)
If 5 persons can do a work in 10 days, then 10 people can complete the same amount of work in ____days.
A piece of work is completed by 9 men. If only 3 men work together, what amount of the same work would be done in the same time?
A certain amount of work "W" was done in 10 seconds. If the same amount of work was done in 20 seconds, what will be the change in power?