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If Jill loses 7 pounds, she will weigh half as much as her brother. To

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Bunuel
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If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink] New post   12 Oct 2017, 23:23
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If Jill loses 7 pounds, she will weigh half as much as her brother. Together, they now weigh 343 pounds. What is Jill’s present weight, in pounds?

(A) 107
(B) 119
(C) 127
(D) 133
(E) 143
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B
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Re: If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink] New post   13 Oct 2017, 03:51
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Let J be Jill's current weight and B be her Brother's weight, then,
J+B=343
J-7=B/2
==>2J-B=14
adding 3J=357.
Solving J=119
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Bunuel
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Re: If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink] New post   12 Oct 2017, 23:31
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Bunuel wrote:
If Jill loses 7 pounds, she will weigh half as much as her brother. Together, they now weigh 343 pounds. What is Jill’s present weight, in pounds?

(A) 107
(B) 119
(C) 127
(D) 133
(E) 143


Similar question from OG: https://gmatclub.com/forum/if-jake-lose ... 43752.html
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raki99
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Re: If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink] New post   13 Oct 2017, 10:20
Here,
Let Jill's current weight= J and her Brother's weight= B
According to question,
J+B=343
J-7=B/2
==>2J-B=14
adding 3J=357.
Solving J=119
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JeffTargetTestPrep
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Re: If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink] New post   16 Oct 2017, 17:15
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Bunuel wrote:
If Jill loses 7 pounds, she will weigh half as much as her brother. Together, they now weigh 343 pounds. What is Jill’s present weight, in pounds?

(A) 107
(B) 119
(C) 127
(D) 133
(E) 143


We can let Jill’s current weight = j and her brother’s current weight = b.

j - 7 = (1/2)b

2j - 14 = b

and

j + b = 343

Substituting (2j - 14) for b in the equation j + b = 343, we have:

j + 2j - 14 = 343

3j = 357

j = 119

Answer: B
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Re: If Jill loses 7 pounds, she will weigh half as much as her brother. To [#permalink]
16 Oct 2017, 17:15
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