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primary 6 | Maths | Ratio
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CV
CV

primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

Hi help to show me the working
Thank you

Date Posted: 7 months ago
Views: 37
J
J
7 months ago
Girls = 40% = 4/10

So after the group of boys joined,

girls → 4 units, boys → 6 units
Total →10 units
Ratio of girls to boys = 4 : 6


Previously, ratio of girls to boys = 4 : 5

So since number of girls did not change,
Number of boys increased by 1 unit.

Percentage increase of boys = 1 unit / 5 units x 100%
= 1/5 x 100%
= 20%
CV
CV
7 months ago
Understand
Thank you very much

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Keith Lincoln Lee
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Hope this helps