Answer:
The pole is 6 ft tall
Explanation:
We can solve this using ratio's
4ft tall Mary x ft tall pole
----------- = -------------------
10 ft shadow 15 ft shadow
Using cross products
4 * 15 = 10 x
60 = 10x
Divide by 10
60/10 = 10x/10
6 =x
The pole is 6 ft tall