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If (d -3n)/(7n - d) = 1 which of the following statements describes

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If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 16 Jul 2018, 20:01
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If \(\frac{(d -3n)}{(7n - d)}= 1\) which of the following statements describes d in terms of n?


A. d is 4 less than n.

B. d is 4 more than n.

C. d is \(\frac{3}{7}\) of n.

D. d is 2 times n.

E. d is 5 times n.

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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 16 Jul 2018, 21:49
Bunuel wrote:
If \(\frac{(d -3n)}{(7n - d)}= 1\) which of the following statements describes d in terms of n?


A. d is 4 less than n.

B. d is 4 more than n.

C. d is \(\frac{3}{7}\) of n.

D. d is 2 times n.

E. d is 5 times n.


Given, \(\frac{(d -3n)}{(7n - d)}= 1\)
Or, d-3n=7n-d
Or, 2d=10n
Or, d=5n
Or, d is 5 times n.

Ans. (E)
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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 16 Jul 2018, 23:09
(d -3n) / (7n - d) = 1
d - 3n = 7n - d
2d = 10n
d = 5n i.e, d is 5 times of n

Hence, E.
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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 17 Jul 2018, 03:22
Bunuel wrote:
If \(\frac{(d -3n)}{(7n - d)}= 1\) which of the following statements describes d in terms of n?


A. d is 4 less than n.

B. d is 4 more than n.

C. d is \(\frac{3}{7}\) of n.

D. d is 2 times n.

E. d is 5 times n.



Given

\(\frac{(d -3n)}{(7n - d)}= 1\)

d-3n = 7n-d

2d = 10n

d = 5n.

So, d is basically 5 times of n.

The best answer is E.
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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 17 Jul 2018, 05:58
Bunuel wrote:
If \(\frac{(d -3n)}{(7n - d)}= 1\) which of the following statements describes d in terms of n?


A. d is 4 less than n.

B. d is 4 more than n.

C. d is \(\frac{3}{7}\) of n.

D. d is 2 times n.

E. d is 5 times n.

\(\frac{(d -3n)}{(7n - d)}= 1\)

Or, \(d - 3n = 7n - d\)

Or, \(2d = 10n\)

Or, \(d = 5n\) ,Answer must be (E)
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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes  [#permalink]

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New post 19 Jul 2018, 16:17
Bunuel wrote:
If \(\frac{(d -3n)}{(7n - d)}= 1\) which of the following statements describes d in terms of n?


A. d is 4 less than n.

B. d is 4 more than n.

C. d is \(\frac{3}{7}\) of n.

D. d is 2 times n.

E. d is 5 times n.


Simplifying and solving for d, we have:

d - 3n = 7n - d

2d = 10n

d = 5n

Answer: E
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Re: If (d -3n)/(7n - d) = 1 which of the following statements describes &nbs [#permalink] 19 Jul 2018, 16:17
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