SAT Mathematics Practice Test 5

Questions 57 and 58 refer to the following information.

Ms. Simon’s Workday Morning Drive

Segment of drive	Distance(miles)	Average driving speed with no traffic delay(mph)
From home to freeway entrance	0.6	2.5
From freeway entrance to freeway exit	15.4	50
From freeway exit to workplace	1.4	35

Ms. Simon drives her car from her home to her workplace every workday morning. The table above shows the distance, in miles, and her average driving speed, in miles per hour (mph), when there is no traffic delay, for each segment of her drive.

Question : 57 of 58

Marks: +1, -0

One morning, Ms. Simon drove directly from her home to her workplace in 24 minutes. What was her average speed, in miles per hour, during her drive that morning?

$43.5$
$43$
$44$
$87/2$

Validate

Solution:

The distance from Ms. Simon’s home to her workplace is

0.6+15.4+1.4=17.4

miles. Ms. Simon took

24

minutes to drive this distance. Since there are 60 minutes in one hour, her average speed, in miles per hour, for this trip is

17.4/24×60=43.5

miles per hour. Based on the directions, 87/2 or 43.5 can be gridded as the correct answer. We are accepting 43 and 44 as additional correct answers because the precision of the measurements provided does not support an answer with three significant digits.

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