Answer: 4 meters
=========================================================
Step-by-step explanation:
Draw out a number line. Denote the runners as A,B,C,D.
- A = April
- B = Betty
- C = Carmen
- D = Donna
Point A can be placed anywhere on the number line. Let's say point A is at 100 on the number line.
Exactly 12 meters to the left, or behind, this value is 100-12 = 88 which is where we'll place point C. Betty is 2 meters ahead of Carmen, telling us that point B is at 90 on the number line.
Donna will be placed at 86 because 100-14 = 86.
To summarize the locations on the number line
- A = 100
- B = 90
- C = 88
- D = 86
Lastly, we subtract the values of D and B to find the distance from Donna to Betty
B-D = 90-86 = 4
Betty is 4 meters ahead of Donna