Free GMAT Practice Question

Question 1 of 1
ID: GMAT-DI-DS-007
Section: Data Insights - Data Sufficiency (DS)
Topic: Linear Equations
Difficulty level: Medium

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Machines $J$, $K$, and $L$ each work at its own constant rate. Working alone, machine $J$ completes a certain job in $6$ hours. Working alone, how many hours does machine $K$ take to complete that same job?

Working simultaneously, machines $J$ and $K$ complete the job in $4$ hours.
Working simultaneously, machines $K$ and $L$ complete the job in $3$ hours.

AStatement (1) ALONE is sufficient, but statement (2) ALONE is not sufficient to answer the question asked.

BStatement (2) ALONE is sufficient, but statement (1) ALONE is not sufficient to answer the question asked.

CBOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.

DEACH statement ALONE is sufficient to answer the question asked.

EStatements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

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