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How many sandwiches were sold today at a certain sandwich stand?

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How many sandwiches were sold today at a certain sandwich stand? [#permalink]

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New post 05 Sep 2017, 23:31
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How many sandwiches were sold today at a certain sandwich stand?

(1) The number of sandwiches sold yesterday is 12 fewer than half of that sold today.
(2) The number sold today is 24 more than twice the number sold yesterday.
[Reveal] Spoiler: OA

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Kudos [?]: 129158 [0], given: 12194

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Re: How many sandwiches were sold today at a certain sandwich stand? [#permalink]

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New post 05 Sep 2017, 23:50
Find number of sandwiches sold today?

(1) The number of sandwiches sold yesterday is 12 fewer than half of that sold today.
Let sandwiches sold yesterday = y
sandwiches sold today = t

so given y = (1/2)*t -12
2y=t-24
Not sufficient

(2) The number sold today is 24 more than twice the number sold yesterday.
give: t= 2*y+24
Its same as details given in point 1.
Not sufficient

As by both we don't get exact value of number of sandwiches.

Answer: E

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Re: How many sandwiches were sold today at a certain sandwich stand? [#permalink]

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New post 06 Sep 2017, 00:32
Bunuel wrote:
How many sandwiches were sold today at a certain sandwich stand?

(1) The number of sandwiches sold yesterday is 12 fewer than half of that sold today.
(2) The number sold today is 24 more than twice the number sold yesterday.


let the no. of sandwiches sold today be x

(1) sold yesterday = (x/2)-12
not sufficient

(2) sold yesterday = (x-24)/2
not sufficient

on combining

(x/2) - 12 = (x-24)/2
x-24 =x-24
not sufficient

E
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Kudos [?]: 140 [0], given: 123

Re: How many sandwiches were sold today at a certain sandwich stand?   [#permalink] 06 Sep 2017, 00:32
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