21 typists complete a project in 8 days. In how many days 15 typists will complete the project?
21 typists can do the full work in 8 days.
1 typist can do $$(1/168)$$part of job in 1 day.
So, 1 typist can do full job in 168 days.
or,15 typists can do full job in $$(168/15)=11.2$$ days.
A is correct choice.
Create a FREE account and get: