Problem:
Marie does three equally time-consuming tasks in a row without taking breaks. She begins the first task at 1:00 PM and finishes the second task at 2:40 PM. When does she finish the third task?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
The first two tasks together took 100 minutes-from 1:00 to 2:40. Therefore each task took 50 minutes. Marie began the third task at 2:40 and finished 50 minutes later, at .
The problems on this page are the property of the MAA's American Mathematics Competitions