alleryStart learning →A ball falls from 81 m and rebounds to 2/3 of its previous height each time. Total upward travel?
A243 m
B135 m
C162 m
D81 m
Answer & Solution
Correct answer: C. 162 m
The rebounds 54, 36, 24, ... form a GP with sum 54 / (1 - 2/3) = 162 m.
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