Answer:
The height of the palm tree is 21 feet.
Step-by-step explanation:
Since Katie is 6 feet tall and casts a shadow that is 2.5 feet, if the palm tree next to her casts a shadow of 8.75 feet at the same time of day, to determine how tall is the palm tree the following calculation must be performed:
2.5 = 6
8.75 = X
(8.75 x 6) / 2.5 = X
52.5 / 2.5 = X
21 = X
Therefore, the height of the palm tree is 21 feet.