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If Company X’s and Company Y’s annual sales in 2011 were each 15 perce

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If Company X’s and Company Y’s annual sales in 2011 were each 15 perce  [#permalink]

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New post 11 Oct 2018, 04:15
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Question Stats:

69% (01:26) correct 31% (01:22) wrong based on 59 sessions

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If Company X’s and Company Y’s annual sales in 2011 were each 15 percent higher than their respective annual sales in 2010, what was Company X’s annual sales in 2010?


(1) The sum of Company X’s and Company Y’s annual sales in 2010 was $60,000.

(2) The sum of Company X’s and Company Y’s annual sales in 2011 was $69,000.

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Re: If Company X’s and Company Y’s annual sales in 2011 were each 15 perce  [#permalink]

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New post 11 Oct 2018, 04:51
Bunuel wrote:
If Company X’s and Company Y’s annual sales in 2011 were each 15 percent higher than their respective annual sales in 2010, what was Company X’s annual sales in 2010?


(1) The sum of Company X’s and Company Y’s annual sales in 2010 was $60,000.

(2) The sum of Company X’s and Company Y’s annual sales in 2011 was $69,000.


Let \(X_2 and Y_2\) be the sales for the companies in 2011 and Let \(X_1 and Y_1\) be the sales for the companies in 2010.

We know \(X_2 + Y_2\) = \((X_1 + Y_1)*1.15\)


For statement 1) we know the sum of \(X_1 and Y_1\) but that only tells us the sum of \(X_2 + Y_2\) and nothing specific on the sales of any of the two companies.

Insufficient.


For statement 2) we know the sum of \(X_2 and Y_2\) but that only tells us the sum of \(X_1 and Y_1\) and nothing specific on the sales of any of the two companies.

Insufficient.

Even when combined we don't get any further insight. we know the increase is 9,000 but what is sales of company x or company y?

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Re: If Company X’s and Company Y’s annual sales in 2011 were each 15 perce   [#permalink] 11 Oct 2018, 04:51
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If Company X’s and Company Y’s annual sales in 2011 were each 15 perce

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