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primary 5 | Maths
| Whole Numbers
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Please help me out with this question. Please use the Assumption method only.
Date Posted: 5 years ago
Views: 326
Assume all answers were incorrect.
Score = 20 x -4 = -80
But the actual score is 40.
Assume now that 1 question was actually correctly answered.
4 points that are deducted for that question must be given back → +4 to the score.
6 points must be awarded for this correct answer → +6 to the score.
6 + 4 = 10
So 10 marks are added per answer that is correct.
40 - (-80) = 40 + 80 = 120
120 points are added.
120 ÷ 10 = 12
12 questions were correctly answered.
Score = 20 x -4 = -80
But the actual score is 40.
Assume now that 1 question was actually correctly answered.
4 points that are deducted for that question must be given back → +4 to the score.
6 points must be awarded for this correct answer → +6 to the score.
6 + 4 = 10
So 10 marks are added per answer that is correct.
40 - (-80) = 40 + 80 = 120
120 points are added.
120 ÷ 10 = 12
12 questions were correctly answered.
Urrmm...
A bit confusing... but thanks anyway.
I don't think my teacher will accept it.
Just a bit curious, are you a person who is a student of Tao Nan? ( Called JJ Hsu? ) If you are not then don't care about this.
Cause JJ Hsu's Mathematics is...
a) brilliant
b) confusing
a) brilliant
b) confusing
Which part is confusing?
Pretty much everything.
#iamfeelingdumb
#iamfeelingdumb
Anyway, are you JJ Hsu?
No.
Oh.
...
--- awkward silence ---
Oh!
You're in Sec school!
Sec 3 right?
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Date Posted:
5 years ago
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