Points A, B, C, and D are on a line in that order.
- The distance from A to D is 24 .
- The distance from B to D is 3 times the distance from A to B.
- Point C is halfway between B and D.
What is the distance from A to C ?
Answer Choices
A. 12
B. 8
C. 16
D. 9
E. 15