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We need to find the sales value of company ABC in 2000.

Option 1: The sales value increased each year by 100,000 from 1990 to 2000. So, in 10 years it got increased by 10*100,000. However, we don't know anything about the value in 1990 hence we cannot deduce the value in 2000. So, option 1 not sufficient.

Option 2: The sales doubled in 2000 from 1990 which means if sales was x in 1990 then it would be 2x in 2000. However still we don't know the value of X so we cannot find . Option 2 alone not sufficient.

Taking both the options together:
we see the increase each year and the initial and final value can be correlated-
final=initial+increase
2x=x+10(100,000)
x=10*100,000. Hence once we have x we can calculate 2x. Hence option C should be correct

Bunuel
What was the value of the sales of the ABC Company in 2000?

(1) The sales of the ABC Company increased by $100,000 each year from 1990 to 2000.
(2) The value of the sales of the ABC Company doubled between 1990 and 2000.


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