Answer:
1 minute
Step-by-step explanation:
The triangles are similar because they have three equal angles
Find length ED
ED is to 105 as 80 is to 140
ED / 105 = 80/140
ED = 80/`140 * 105 = 60 m
60 m / 3600 m/hr = 1/60 hr = 1 minute
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