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# How many more boys than girls are in the class? (1) There are a total

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Math Expert
Joined: 02 Sep 2009
Posts: 58344
How many more boys than girls are in the class? (1) There are a total  [#permalink]

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30 Oct 2018, 04:14
1
1
00:00

Difficulty:

15% (low)

Question Stats:

96% (00:56) correct 4% (04:03) wrong based on 26 sessions

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How many more boys than girls are in the class?

(1) There are a total of 10 boys and girls in the class.
(2) The number of boys in the class equals the cube of the number of girls in the class.

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Intern
Joined: 19 Apr 2017
Posts: 32
Location: India
WE: Management Consulting (Consulting)
Re: How many more boys than girls are in the class? (1) There are a total  [#permalink]

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30 Oct 2018, 04:33
We need the exact number of boys and girls in the class to answer how many more boys.

Statement 1: Tells us the total is 10. Nothing about the relation between the numbers of boys and girls, so insufficient.
Statement 2: Tells us if girls = g, boys = g cubed. But we don't know the exact number, so insufficient.

Combing the two we have g + g cubed = 10, the only possible value for a cube within 10 is 8. Therefore, there are 6 more boys than girls.

Will wait for the OA.
Re: How many more boys than girls are in the class? (1) There are a total   [#permalink] 30 Oct 2018, 04:33
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