Company Z

[umaa]

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?

2. In 2008, Company Z sold 20% fewer tables than chairs.

[mehravikas]

E???????

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?

2. In 2008, Company Z sold 20% fewer tables than chairs.

[satish.nagdev]

I think C

[pandeyvineet24]

IMO C

[Stuart@KaplanGMAT]

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?

2. In 2008, Company Z sold 20% fewer tables than chairs.

A good general equation to know for test day:

Revenue from sales of products x, y, z, ... = Price(x)*Quantity(x) + Price(y)*Quantity(y) + Price(z)*Quantity(z) + ...

For this question, we're asked what % of revenue came from the sale of 1 of only 2 products. So basically, we want to know the ratio of revenue(tables):revenue(chairs).

Plugging into our revenue equation, we want:

P(c)Q(c)/P(t)Q(t)

It should be very clear that neither 1 nor 2 is sufficient alone, since each only relates to one of our missing variables (i.e. price or quantity). So, let's eliminate A, B and D and jump right to combination.

From (1), we know that P(c)/P(t) = 1/1.1

From (2), we know that Q(c)/Q(t) = 1/.8

Combined, we know that the ratio is (1*1)/(1.1*.8).. sufficient, choose C.

[ssuarezo]

Thanks Stuart.
Your explanation is clear.
To all the others: please, when submitting an answer, give your logic to find your answer.
Thank you,
Silvia

[umaa]

OA is C. Thanks everyone!