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Bunuel
From 2005 to 2006, by what percent did the sales of Company A increase?

(1) In 2005, the sales for Company A were 1/4 of the sales of Company B.
(2) In 2006, the sales for Company A were 3/4 of the sales of Company B.

The answer is straight E. If the sales of Company B in 2005 and 2006, were the same (say $100 and $100), then the increase in sales of Company A would be (75-25)/25*100=200% BUT if the sales of Company B in 2005 and 2006, were NOT the same (say $100 and $200), then the increase in sales of Company A would be different: (150-25)/25*100=500%. Not sufficient.

Answer: E.

Hope it's clear.

Made a silly assumption! Thanks for pointing it out...
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Bunuel
From 2005 to 2006, by what percent did the sales of Company A increase?

(1) In 2005, the sales for Company A were 1/4 of the sales of Company B.
(2) In 2006, the sales for Company A were 3/4 of the sales of Company B.

The answer is straight E. If the sales of Company B in 2005 and 2006, were the same (say $100 and $100), then the increase in sales of Company A would be (75-25)/25*100=200% BUT if the sales of Company B in 2005 and 2006, were NOT the same (say $100 and $200), then the increase in sales of Company A would be different: (150-25)/25*100=500%. Not sufficient.

Answer: E.

Hope it's clear.

Don't they need to clarify that they mean the sales of Company B in the same year?
Or when they say "In 2005" they mean not only for sales of Company A but for both?

Cheers
J :)
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jlgdr
Bunuel
From 2005 to 2006, by what percent did the sales of Company A increase?

(1) In 2005, the sales for Company A were 1/4 of the sales of Company B.
(2) In 2006, the sales for Company A were 3/4 of the sales of Company B.

The answer is straight E. If the sales of Company B in 2005 and 2006, were the same (say $100 and $100), then the increase in sales of Company A would be (75-25)/25*100=200% BUT if the sales of Company B in 2005 and 2006, were NOT the same (say $100 and $200), then the increase in sales of Company A would be different: (150-25)/25*100=500%. Not sufficient.

Answer: E.

Hope it's clear.

Don't they need to clarify that they mean the sales of Company B in the same year?
Or when they say "In 2005" they mean not only for sales of Company A but for both?

Cheers
J :)

Yes, "in 2005..." and "in 2006..." refer to both company A and company B.
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