Answer:
Option B. \(1\frac{2}{3}\)
Step-by-step explanation:
Sally takes time to clean the house = 5 hours
If Sally and her two friends do the job at the same rate,
The time for the same work done by 3 people = time taken by one / number of people
=\(\frac{5}{3}\)
= \(1\frac{2}{3}\)
It will take \(1\frac{2}{3}\) hours to clean the house by 3 people.
