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When x is divided by 10, the quotient is y with a remainder of 4. If x

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When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 04:05
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When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4

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When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 04:23
X = 10Y+4.
When X is divided by 5, then X= 2Y+4. Hence 4 is the remainder.
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 04:27
Bunuel wrote:
When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


x=10y+r ==> 10y+4

If x is divided by 5 then the remainder is 4

Hence E
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 06:08
Bunuel wrote:
When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


can be written as
x=10y+4
the following values are possible
x=14,24,34,44,54...(essentially a unit digit of 4)
all of the above values when divided by 5 gives 4 as its remainder.
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 06:10
Bunuel wrote:
When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


x = 10y + 4

Plug in some value of y ( say y = 1)

Thus, x = 10 + 4 => 14

Now, When xy/5 = 14*1/5 = Remainder 4, Answer must be (E) 4
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 13 Aug 2018, 09:54
Bunuel wrote:
When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


Approach 1:

\(\frac{x}{10} = y + 4\)

x = 10y + 4

Now we have to divide x by 5 .

10y is divisible by 5 but 4 is not. Thus 4 is remainder.

Approach 2 :

probable value of x.

x could be 14 as per the condition stated in the question.

\(\frac{14}{5} = 5*2 + 4\)

4 is remainder here.

The best answer is E.
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x  [#permalink]

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New post 18 Aug 2018, 18:25
Bunuel wrote:
When x is divided by 10, the quotient is y with a remainder of 4. If x and y are both positive integers, what is the remainder when x is divided by 5?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


We can create the equation:

x = 10y + 4

So when x is divided by 5 we have:

(10y + 4)/5 = 2y + 4/5, so the remainder is 4.

Answer: E
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Re: When x is divided by 10, the quotient is y with a remainder of 4. If x &nbs [#permalink] 18 Aug 2018, 18:25
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