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When the integer X is divided by 5, the remainder is 2. Which of the

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When the integer X is divided by 5, the remainder is 2. Which of the  [#permalink]

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New post 09 Sep 2019, 23:46
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

71% (01:52) correct 29% (01:17) wrong based on 42 sessions

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Re: When the integer X is divided by 5, the remainder is 2. Which of the  [#permalink]

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New post 10 Sep 2019, 00:20
Bunuel wrote:
When the integer X is divided by 5, the remainder is 2. Which of the following can be a multiple of (X+3)?

A. 8X + 7.
B. 9X – 3.
C. 11X – 4.
D. 13X.
E. 13X + 1.



X is divided by 5, the remainder is 2.

So, X could be 2, 7, 12, 17...........

X + 3 = 2 + 3 = 5

X + 3 = 7 + 3 = 10

Ultimately , we will have a multiple of 5.

Option B:

9X - 3 = 9*2 - 3 = 15

9X - 3 = 9*7 - 3 = 60

B is the correct answer.
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Re: When the integer X is divided by 5, the remainder is 2. Which of the  [#permalink]

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New post 10 Sep 2019, 01:24
Bunuel wrote:
When the integer X is divided by 5, the remainder is 2. Which of the following can be a multiple of (X+3)?

A. 8X + 7.
B. 9X – 3.
C. 11X – 4.
D. 13X.
E. 13X + 1.


Least possible value of x = 2

Now (x + 3 ) or 5 is a multiple of , now check the options

(A) 8*2 + 7 = 23 ( NOt possible)
(B) 9*2 - 3 = 25 (Possible)

Now need to go any further, Answer must be (B)
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Re: When the integer X is divided by 5, the remainder is 2. Which of the  [#permalink]

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New post 10 Sep 2019, 02:18
Bunuel wrote:
When the integer X is divided by 5, the remainder is 2. Which of the following can be a multiple of (X+3)?

A. 8X + 7.
B. 9X – 3.
C. 11X – 4.
D. 13X.
E. 13X + 1.


let x= 7
so 9x-3 ; 60
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Re: When the integer X is divided by 5, the remainder is 2. Which of the  [#permalink]

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New post 16 Oct 2019, 05:54
I got the question right by plugging in but is there a way to solve this mathematically (other ways than plugging in)
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Re: When the integer X is divided by 5, the remainder is 2. Which of the   [#permalink] 16 Oct 2019, 05:54
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