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If seven times m is equivalent to both three times n and 2 times p, wh

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If seven times m is equivalent to both three times n and 2 times p, wh [#permalink]

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New post 17 Feb 2017, 06:47
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If seven times m is equivalent to both three times n and 2 times p, what is the value of m + n + p?

(1) m – n = –4
(2) n + p = 5

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Re: If seven times m is equivalent to both three times n and 2 times p, wh [#permalink]

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New post 17 Feb 2017, 07:18
duahsolo wrote:
If seven times m is equivalent to both three times n and 2 times p, what is the value of m + n + p?

(1) m – n = –4
(2) n + p = 5



Hi...

info.. we have all three related to each other, so m+n+p can be written in terms of just one variable..
If we know even one variable, we can find the value


Let's see the statements...
1) m-n=-4..
This again can be converted into single variable as both m and n are directly related..
We can find single variable, which will further help us in finding the SUM..
Sufficient
2) n+p=5..
Same as statement I
Sufficient

D
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Re: If seven times m is equivalent to both three times n and 2 times p, wh [#permalink]

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New post 17 Feb 2017, 07:20
Given 7m=3n=2p. They are basically 2 equations and we have to find m+n+p

1) m – n = –4. This will the 3rd equation. 3 equations 3 variables. Sufficient

2) n + p = 5. This will the 3rd equation. 3 equations 3 variables. Sufficient

Answer - D
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Re: If seven times m is equivalent to both three times n and 2 times p, wh [#permalink]

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New post 17 Feb 2017, 08:02
7m=3n=2p.

One can easily convert both equations from double variable to single. And hence it can be soved.

Ans D.
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Re: If seven times m is equivalent to both three times n and 2 times p, wh   [#permalink] 17 Feb 2017, 08:02
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