Question 866507
Assuming that "passing" is 70%
.
Since 80% of the grade is already earned, you have:
82
82
82
82
82
82
82
82
What is the remaining score needed?  You'll need 700 points out of 1000 to pass.
You already have 656.  Therefore, you only need a 22 to pass. (22*2)
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If 80% is passing, then you need 800-656, or 144/2 to pass, or 77.
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If 90% is passing, then you need 900-656, or 244/2, which is impossible.