# The Knewton Blog

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## Knewton Challenge Discussion – GMAT Data Sufficiency (Eunice Selling Cakes)

Posted in Test Prep on December 8, 2010 by

This is a Data Sufficiency problem from Session 5, Extra Practice HW 3 (Quantitative Strategy). So far, 63.5% of Knewton students have missed it. How would you approach it?

Try it out, then share your answers, questions, and thought processes in the comments below. Remember, if you’re in our GMAT class now, add your teacher name and session to your comment (e.g., Zwelling, MW 1:30). We’ll post the official answer (in video form!) in a week or so. Good luck!

Update: Once you’ve tried the question, click the video below to see the answer and an explanation from Kyle, one of our GMAT team members.

Eunice sold several cakes. If each cake sold for either exactly 17 or exactly 19 dollars, how many 19 dollar cakes did Eunice sell?

1. Eunice sold a total of 8 cakes.
2. Eunice made 140 dollars in total revenue from her cakes.

[A] Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
[B] Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
[C] BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
[D] EACH statement ALONE is sufficient.
[E] Statements (1) and (2) TOGETHER are NOT sufficient.

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