2020 AMC 8 Problems/Problem 20
A scientist walking through a forest recorded as integers the heights of trees standing in a row. She observed that each tree was either twice as tall or half as tall as the one to its right. Unfortunately some of her data was lost when rain fell on her notebook. Her notes are shown below, with blanks indicating the missing numbers. Based on her observations, the scientist was able to reconstruct the lost data. What was the average height of the trees, in meters?
Solution 1
It is not too hard to construct as the heights of the trees from left to right. The average is .
See also
2020 AMC 8 (Problems • Answer Key • Resources) | ||
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