Problem:
Malaika is skiing on a mountain. The graph below shows her elevation, in meters, above the base of the mountain as she skis along a trail. In total, how many seconds does she spend at an elevation between and meters?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
Draw horizontal lines corresponding to the elevations of meters and meters.
The lines show that Malaika’s elevation was between meters and meters over the follow- ing time intervals.
Therefore Malaika spent seconds between the elevations of and meters.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions