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33 votes
33 votes
In a class of 52 students ,the number of boys is 6/7 of the number of girls. How many are boys? ​

User Penguinsource
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1 Answer

23 votes
23 votes

Answer:

24 boys

Explanation:

You can solve this using simultaneous equations.

You know the number of boys plus the number of girls is 52, so b + g = 52.

You also know the number of boys is 6/7 the number of girls, so b = 6/7g

Then you can substitute this into the first equation - 6/7g + g = 52, so 13/7g = 52.

Solving that equation, 52 / 13/7 = 28, so there are 28 girls.

You then work out the number of boys by doing 52- the number of girls, so 52- 28 = 24 boys

Hope this helps, let me know if you have any questions :)

User Sean
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