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# math 143

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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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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