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At a certain park, people are divided into four general age groups: in
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02 Jun 2022, 03:00
02 Jun 2022, 03:00
Expert Reply
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Question Stats:
76% (01:09) correct
23% (01:42) wrong based on 13 sessions
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At a certain park, people are divided into four general age groups: infants, children, adolescents, and adults. The ratio among them is 3 : 15 : 12 : 20. If the total number of people at the park is 150, how many children and adolescents are there?
Show: ::
81
Part of the project: Skill Builder Project for a Q170
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GRE Math Essentials
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: At a certain park, people are divided into four general age groups: in
[#permalink]
02 Jun 2022, 06:51
02 Jun 2022, 06:51
1
Add the numbers in the ratio to find the total is 50.
Question asks for children and adolescents, so
Take 15/50 and multiply by 150,
Take 12/50 and multiply by 150,
Add the two products together to get 81.
Question asks for children and adolescents, so
Take 15/50 and multiply by 150,
Take 12/50 and multiply by 150,
Add the two products together to get 81.
gmatclubot
Re: At a certain park, people are divided into four general age groups: in [#permalink]
02 Jun 2022, 06:51
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