Answer:
Number of hours it takes the machine to print 1265 posters is:
5.5 hours
Explanation:
A machine prints 230 movie posters each hour.
In 1 hour machine prints 230 movie posters
Let in x hours it prints 1265 posters
In 1 hour machine prints= 1265/x posters
i.e.

Hence, Number of hours it takes the machine to print 1265 posters is:
5.5 hours