Posted by anonomous on Tuesday, April 22, 2008 at 10:01pm.
How many people attend the movie?
The persons getting a free ticket would be numbers 12,24,36,48,60,72,...
the persons getting free popcorn would be
numbers 15,30,45,60,75,...
isn't 60 the LCM of 12 and 15?
so the people getting both would be number
60,120,...
So, Ms. Sue pointed out, we would have to know how many people attended to answer the question.
I am sure you can take it from here.
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