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primary 5 | Maths
| Whole Numbers
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Average question. Pls help. Try to get it correct even if it's not correct, it's okay. Thanks!
Date Posted: 2 years ago
Views: 422
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Concept tested : average, excess-shortage
Question type : Double 'if'
Difference between 20 more marks and 4 more marks is :
20 - 4 = 16
With 16 more marks, the average goes up by : 80 - 78 = 2
Since the average increases by 2, every student got 2 marks more if we considered the total number of marks to be divided equally among them.
Number of students including Jacob = 16 ÷ 2 = 8
Question type : Double 'if'
Difference between 20 more marks and 4 more marks is :
20 - 4 = 16
With 16 more marks, the average goes up by : 80 - 78 = 2
Since the average increases by 2, every student got 2 marks more if we considered the total number of marks to be divided equally among them.
Number of students including Jacob = 16 ÷ 2 = 8
It is correct.
Thank you so much!
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