Final answer:
The total distance traveled in yards is 40 yards.
Step-by-step explanation:
To find the total distance traveled, we need to determine the number of units traveled and then multiply that by the length of each unit.
Since one unit on the coordinate grid equals 10 yards, we need to determine the number of units traveled. Since the student starts at location 1 and returns back to location 1, they have traveled a complete loop around the coordinate grid.
A complete loop on the coordinate grid consists of 4 sides. So, the student has traveled 4 units.
Therefore, the total distance traveled in yards is 4 units x 10 yards/unit = 40 yards.