To all of you grammar nazis out there "Weren't" is the right word!
7 Hours of school weren't enough = 7 Hours of school were not enough - RIGHT ONE
7 Hours of school wasn't enough = 7 Hours of school was not enogh - does that seem right to you?
It's "Weren't" because you're describing the "7 hours" NOT the "school" word. So go learn some english before commenting about wrong grammar.
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