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How many boys are there?

 

 Jul 10, 2020
 #1
avatar+530 
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So, let b = # of boys and g = # of girls.

 

1/3 of b = 2/5 g, every boy has a girl to pair up with and vice versa in the group.

 

b/3 = 2g/5

 

b + g = 88

We can write a variable in terms of the other, like this: b = 88 - g

 

(88 - g) / 3 = 2g / 5

440 - 5g = 6g

440 = 11g


Hmm, nice!

g = 440 / 11 = 40

 

So, there are 40 girls.


Then, there are 88 - 40 = 48 bois!

 Jul 10, 2020
 #2
avatar+59 
0

:) gj CentsLord

 Jul 10, 2020
edited by ryanthemathboi  Jul 10, 2020

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