Answer:
12 assistants
Explanation:
If 5 assistants can do in 1 hour what 3 specialists can do, you want to know the number of assistants needed to do in 10 hours what 8 specialists can do in 9 hours.
Effort
The 1-hour job tells us that how to relate the effort of assistants to that of specialists:
5 assistant·hours = 3 specialist·hours
The longer job takes 8 specialists 9 hours, so is a job requiring an effort of ...
(8 specialists)·(9 hours) = 72 specialist·hours
In terms of assistant·hours, that is ...
72 specialist·hours = 24(3 specialist·hours) = 24(5 assistant·hours)
= 120 assistant·hours = (12 assistants)(10 hours)
It takes 12 assistants to complete the same job in 10 hours.
<95141404393>