Answer:
38/25
Step-by-step explanation:
In weeks, the first movie took
... (66 1/2 days)/(7 days/week) = (133/(2·7)) weeks = 19/2 weeks
The second movie took 25/4 weeks, so the ratio of times is ...
... (19/2)/(25/4) = (38/4)/(25/4) = 38/25
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It doesn't matter what the units of comparison are, as long as they're both the same. The result will be unchanged.