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# If 5/9 of the members of the school chorus are boys, what is

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If 5/9 of the members of the school chorus are boys, what is [#permalink]  03 May 2017, 02:30
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94% (00:25) correct 5% (00:00) wrong based on 19 sessions

If $$\frac{5}{9}$$ of the members of the school chorus are boys, what is the ratio of the girls to boys in the chorus ??

[Reveal] Spoiler:
$$\frac{4}{5}$$

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Director
Joined: 03 Sep 2017
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Re: If 5/9 of the members of the school chorus are boys, what is [#permalink]  09 Oct 2017, 08:11
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If we take a cozy value for the number of members of the chorus, such as 90, the number of boys will be 90*(5/9) = 50, then the girls would be 90-50 = 40.

The ratio girl to boys is then 40/50 or simplifying 4/5.
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Re: If 5/9 of the members of the school chorus are boys, what is [#permalink]  06 Mar 2019, 15:20
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KUDOS
5/9 of the members of the school chorus are boys, that means 4/9 of the members of the school chorus are girls.

the ratio of the girls to boys in the chorus then is 4/9 : 5/9, which is (4/9) ÷ (5/9) = 36/45 = 4/5.
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Re: If 5/9 of the members of the school chorus are boys, what is [#permalink]  17 Mar 2019, 19:04
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Expert's post
For every 9 chorus members, 5 are boys, which means that 4 are girls. Hence, the ratios of girls to boys is 4 to 5.
Re: If 5/9 of the members of the school chorus are boys, what is   [#permalink] 17 Mar 2019, 19:04
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