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If the ratio of children to adults is 3:53:5 and there are 120120 children at an amateur surfing competition, how many adults are in attendance?

 Jan 25, 2022
 #1
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If the ratio of children to adults is 3:53:5 and there are 120120 children at an amateur surfing competition, how many adults are in attendance? 

 

I think the the problem is trying to say the ratio is 3:5 and somehow it just got doubled up. 

 

So the ratio is 3:5.  That means there are 3 + 5 portions, or 8 portions.  

If you can thing of a better word than portions, then use it.  

 

Divide 120,120 by the total number of portions                 120,120 / 8 = 15,015   

 

So each portion is 15,015 and the adults have 5 of them.   15,015 • 5 = 75,075 adults  

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 Jan 25, 2022
 #2
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IGNORE THE ABOVE

 

I misread the question.  I read the total was 120,120.  THAT'S WRONG.  The children are 120,120. 

Guest Jan 25, 2022
 #3
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If the ratio of children to adults is 3:53:5 and there are 120120 children at an amateur surfing competition, how many adults are in attendance?

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3/5 = 120/adults

adults = 200

 Jan 25, 2022
edited by Guest  Jan 25, 2022
 #4
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If the ratio of children to adults is 3:53:5 and there are 120120 children at an amateur surfing competition, how many adults are in attendance?  

 

I think the 3:5 doubled up and I think the 120 doubled up.  I don't know why it would do that.  

 

So 3 / 5 is the ratio and there are 120 children

 

                           3 / 5  =  120 / x   

 

cross multiply      3 • x  =  5 • 120  

 

                               3x  =  600  

 

                                 x  =  200 Adults  

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 Jan 25, 2022
edited by Guest  Jan 25, 2022
 #5
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The other guest got in while I was typing up my correction. 

 

I'm glad to see that we both obtained the same answer. 

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Guest Jan 25, 2022

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