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Lesson: Data Sufficiency Intermeddiate - 15

Proportions In Data Sufficiency: Distance = Rate × Time

[Page 15 of 21]

Now let's apply our method to a proportions rate problem. Choose your answer, then click Continue.

If Joyce took 30 minutes to drive from Town A to Town B, what was her average speed?

  1. The distance from Town A to Town B is 28 miles.
  2. Joyce drove at maximum speed of 65 miles per hour and a minimum speed of 45 miles per hour in this interval.
Statement (1) BY ITSELF is sufficient, but statement (2) by itself is not sufficient.
Statement (2) BY ITSELF is sufficient, but statement (1) by itself is not sufficient.
Both statements TAKEN TOGETHER are sufficient, but NEITHER statement BY ITSELF is sufficient.
EACH statement BY ITSELF is sufficient.
The two statements TAKEN TOGETHER are NOT sufficient.

Countinue

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