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What was a certain company's revenue last year?

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Source: — Data Sufficiency |

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by Jay@ManhattanReview » Sat Jan 19, 2019 11:56 pm

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BTGmoderatorLU wrote:Source: GMAT Prep

What was a certain company's revenue last year?

1) Last year gross profit was $4,100.
2) Last year revenue was 50% greater than expenses.

The OA is C
Say Revenue = R and Expenses = E

Let's take each statement one by one.

1) Last year gross profit was $4,100.

Thus, R - E = 4100. Can't get the unique value of R. Insufficient.

2) Last year revenue was 50% greater than expenses.

=> R = 1.5E. Can't get the unique value of R. Insufficient.

(1) and (2) together

From R - E = 4100 and R = 1.5E, we can get the unique value of R. Sufficient.

No need to calculate the value of R since we have two distinct linear equations involving R.

The correct answer: C

Hope this helps!

-Jay
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