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Question
primary 6 | Maths
| Data Analysis
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Date Posted: 2 years ago
Views: 252
How many new enrollment class of 37? Not clear
If 5 new enrollment classes,
Working...
Difference in average = 33-28 = 5
Difference in total boys = 37×5 - 33× 5
= 185-165
= 20
Number of class in 2019
= 20÷5
= 4
Total class in 2020 = 4+5 = 9
Total boys = 9×33 = 297
Working...
Difference in average = 33-28 = 5
Difference in total boys = 37×5 - 33× 5
= 185-165
= 20
Number of class in 2019
= 20÷5
= 4
Total class in 2020 = 4+5 = 9
Total boys = 9×33 = 297
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