Solutions

Get detailed explanations to advanced GMAT questions.



Question

Larissa and Steve each drove the same distance from City X to City Y in separate cars. Did it take longer for Larissa than for Steve to complete this trip?

I. On this trip, Larissa’s average speed was 80 kilometres per hour and Steve’s average speed was 85 kilometres per hour

II. On this trip, Larissa and Steve each drove 68 kilometres


 

Option A:

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

Option B:

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

Option C:

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

Option D:

EACH statement ALONE is sufficient to answer the question asked.

Option E:

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

Difficulty Level

Easy

Solution

Option A is the correct answer.


Option Analysis

Since both of them travelled the same distance, we just need to know their speeds to compare the time.

Statement I is sufficient: This tells Steve’s have the greater speed. So definitely Larissa would have taken more time. So sufficient.

Statement II is insufficient: Knowing the distance will not help anything here. So not sufficient.