grewb3eraad9oiz grewb3eraad9oiz

19-12-2016
Mathematics

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A class of 28 students. the ratio of girls of 3 girls 4 boys. what is the ratio for the number of boys to total number students in the class?

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greenacres greenacres

19-12-2016

You need to make a proportion. Cross multiply then divide

boys 4 x
students 7 28

(4)(28) = 7x
112 = 7x
x= 16

There are 16 boys

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