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In a party a certain number of drinks were served.

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Joined: 25 Dec 2018
Posts: 145
Location: India
GMAT 1: 490 Q47 V13
GPA: 2.86
In a party a certain number of drinks were served.  [#permalink]

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New post 09 Feb 2019, 10:57
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A
B
C
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E

Difficulty:

  65% (hard)

Question Stats:

53% (02:12) correct 47% (02:20) wrong based on 30 sessions

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In a party a certain number of drinks were served. 15 girls in the party refused to take drinks whereas 45 boys took drinks. What was the total number of boys in the party?

I. Number of girls who took drinks was 3 times the number of boys who did not take drinks.

II. Total number of people who took drinks was 3 times the number of people who did not take drinks.
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Re: In a party a certain number of drinks were served.  [#permalink]

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New post 09 Feb 2019, 11:07
akurathi12 wrote:
In a party a certain number of drinks were served. 15 girls in the party refused to take drinks whereas 45 boys took drinks. What was the total number of boys in the party?

I. Number of girls who took drinks was 3 times the number of boys who did not take drinks.

II. Total number of people who took drinks was 3 times the number of people who did not take drinks.


-----------------------Girls------------Boys
TakeDrink-------------3x--------------45--------3y
RefuseDrink----------15---------------x---------y
---------------------3x+15-----------45+x------4y

From 1) Let x number of boys who did not take drinks
3x = Number of girls who took drinks

From 2) Total number of people who took drinks = 3y
number of people who did not take drinks. = y

one equation,2 variables
3x+45 =3y, across all columns

The moment you realize this, answer is E
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Re: In a party a certain number of drinks were served.   [#permalink] 09 Feb 2019, 11:07
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In a party a certain number of drinks were served.

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