Problem:
The graph below shows the number of minutes studied by both Asha (black bar) and Sasha (grey bar) in one week. On the average, how many more minutes per day did Sasha study than Asha?
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Answer Choices:
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B.
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E.
Solution:
Asha's study time totals minutes, for an average of minutes per day. Sasha's total is minutes, for an average of minutes per day, so Sasha averages minutes more per day than Asha.
The daily differences between Sasha and Asha are , and minutes for a total of minutes. The average difference is minutes per day.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions