<PRE><B>Question 978409</B>
I&#39;m not sure I understand the question as written.
50 students passed English
60 students passed math
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100 students passed English OR math. However:
50 students passed English
40 students passed English (they also passed math)
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90 students passed English. And,
60 students passed math
40 students passed math (they also passed English)
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100 students passed math
...........
So, to your question:
90 students passed English and 100 students passed math. HOWEVER: 
50 students passed English only and 60 students passed math only.
We are not double counting, the total number of students is still 50+60+40=150, it&#39;s just that we are dealing with two subjects, English and math.
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