Answer:
The answer is m = 150
Explanation:
A - 700 = 250 + 3m
B - m = 150 miles
C - m = 150
3(150) + 250 = 700
↓ ↓ ↓ ↓ ↓
450 + 250 = 700
∨ ↓ ↓
700 = 700 ✓
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