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# Before noon on Wednesday,there was a certain number of hex nuts in a b

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Intern
Joined: 27 Feb 2018
Posts: 41
Location: India
Concentration: Strategy, Entrepreneurship
GMAT 1: 650 Q48 V32
GPA: 3.86
Before noon on Wednesday,there was a certain number of hex nuts in a b  [#permalink]

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14 Nov 2018, 03:25
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Difficulty:

5% (low)

Question Stats:

89% (01:11) correct 11% (01:16) wrong based on 61 sessions

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Before noon on Wednesday, there was a certain number of hex nuts in a bin. After a delivery at noon that day, the number of hex nuts in the bin increased by 30%. Which of the following could be the number of hex nuts in the bin after that delivery?

5100
5200
5400
5500
5600
Manager
Joined: 14 Jun 2018
Posts: 205
Re: Before noon on Wednesday,there was a certain number of hex nuts in a b  [#permalink]

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14 Nov 2018, 04:10
x * 130/100 = k
or x = k * 100/130

check the options for the number divisible by 130.

Ans B
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Joined: 31 Oct 2013
Posts: 1490
Concentration: Accounting, Finance
GPA: 3.68
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Re: Before noon on Wednesday,there was a certain number of hex nuts in a b  [#permalink]

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16 Nov 2018, 02:45
sahilkak wrote:
Before noon on Wednesday, there was a certain number of hex nuts in a bin. After a delivery at noon that day, the number of hex nuts in the bin increased by 30%. Which of the following could be the number of hex nuts in the bin after that delivery?

5100
5200
5400
5500
5600

Let before noon the hex nuts be 100.

After delivery nuts increased to 130.

Therefore total no. of nuts must be divisible by 130.

Option B Matches.
GMAT Club Legend
Joined: 11 Sep 2015
Posts: 4991
GMAT 1: 770 Q49 V46
Re: Before noon on Wednesday,there was a certain number of hex nuts in a b  [#permalink]

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03 Aug 2019, 06:17
Top Contributor
sahilkak wrote:
Before noon on Wednesday, there was a certain number of hex nuts in a bin. After a delivery at noon that day, the number of hex nuts in the bin increased by 30%. Which of the following could be the number of hex nuts in the bin after that delivery?

5100
5200
5400
5500
5600

Let x = number of nuts BEFORE noon
So, x + (30% of x) =number of nuts AFTER noon
In other words, 1.3x = number of nuts AFTER noon

Now check the answer choices.....
A. 5100
This means 1.3x = 5100
If we divide both sides by 1.3, we get: x = 5100/1.3 = 3923.0769...
This means there were 3923.0769... hex nuts BEFORE noon.
Since the number of hex nuts must be a positive INTEGER, answer choice A is no good.

NOTE: The correct answer must be divisible by 1.3

B. 5200 = 13 x 400
So, 5200/1.3 = 4000 (a positive integer)
PERFECT!!

Cheers,
Brent
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Re: Before noon on Wednesday,there was a certain number of hex nuts in a b  [#permalink]

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11 Aug 2019, 18:31
sahilkak wrote:
Before noon on Wednesday, there was a certain number of hex nuts in a bin. After a delivery at noon that day, the number of hex nuts in the bin increased by 30%. Which of the following could be the number of hex nuts in the bin after that delivery?

5100
5200
5400
5500
5600

If there were x hex nuts before the delivery, then there are 1.3x hex nuts after the delivery. Of all the numbers in the answer choices, only 5200 will make x an integer when 1.3x is set equal to:

1.3x = 5200

x = 5200/1.3 = 4000

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Re: Before noon on Wednesday,there was a certain number of hex nuts in a b   [#permalink] 11 Aug 2019, 18:31

# Before noon on Wednesday,there was a certain number of hex nuts in a b

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