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primary 5 | Maths
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Date Posted: 7 years ago
Views: 424
With a total of 2700 pupils, 5/9 of the students means there are 1500 boys.
The number of boys who wear specs are 2/5 of the number of boys = 600.
Since 4/5 of the students wearing specs are chinese, that means 1/5 of the boys wearing specs are indian and malays, meaning 600×1/5 = 120 boys
From this 120 boys, 1/3 of them are indians, means 2/3 are malay. Therefore the number of malay boys wearing specs are 120 × 2/3 = 80
Hope it helps!
The number of boys who wear specs are 2/5 of the number of boys = 600.
Since 4/5 of the students wearing specs are chinese, that means 1/5 of the boys wearing specs are indian and malays, meaning 600×1/5 = 120 boys
From this 120 boys, 1/3 of them are indians, means 2/3 are malay. Therefore the number of malay boys wearing specs are 120 × 2/3 = 80
Hope it helps!
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1) Understand that there are 2700 in the whole school
2) 5/9 are boys, hence 5 units.
3) 5 units of boys, 2 units of them wear spectacles.
4) Out of the 2 units of boys that wear spectacles, they are 4 units Chinese and one unit of Remainder
5) One unit of reminder, has One unit of Indian and 2 units of Malays.
Hence after you managed to understand, you will be able to visualise how i derived with this answer. U can lmk if you need further explanation
2) 5/9 are boys, hence 5 units.
3) 5 units of boys, 2 units of them wear spectacles.
4) Out of the 2 units of boys that wear spectacles, they are 4 units Chinese and one unit of Remainder
5) One unit of reminder, has One unit of Indian and 2 units of Malays.
Hence after you managed to understand, you will be able to visualise how i derived with this answer. U can lmk if you need further explanation
Date Posted:
7 years ago
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