Kramer can pack X boxes of cigarettes per minute. If there are Y boxes of cigarettes in one case, how many cases can Kramer pack in 5 hours? Choose the correct option:
A) 60X/Y. B) 300X/Y. C) 60Y/X. D) 120Y/X. E) (X + Y)/60.
Kramer can pack X boxes per min.   Therefore in 5 hrs(300mins)he can pack 300X boxes.   If there are Y boxes in one case then then the total number of cases packed by Kramer = 300X/Y   (ANSWER 300X/Y.)
<result>B</result>
Kramer can pack X boxes of cigarettes per minute. If there are Y boxes of cigarettes in one case, how many cases can Kramer pack in 5 hours?