Carcass wrote:
A certain ball was dropped from a window 8 meters above a sidewalk. On each bounce it rose straight up exactly one-half the distance of the previous fall. After the third bounce the ball was caught when it reached a height of exactly 1 meter above the sidewalk. How many meters did the ball travel in all?
(A) 21
(B) 19
(C) 17
(D) 15
(E) 13
Drop
8 meters
Rise
4 meters
Drop
4 meters
Rise
2 meters
Drop
2 meters
Rise
1 meters (DONE!)
8 + 4 + 4 + 2 + 2 + 1 =
21 meters
Answer: A
Cheers,
Brent