The results of a exam had 15% of students earning atleast a "B", 65% with atleast a "C-", and 45% with less than a "C". What % of the students received a "C" or a "C+"?(adsbygoogle = window.adsbygoogle || []).push({});

The whole less than C and atleast C- thing is throwing me off and I can't seem to wrap my head around it.

Any help would be greatly appreciated.

Thanks

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# Probability Question

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