Two boats simultaneously departed from the same pier in the same direction.
| April 3, 2021 | education
Two boats simultaneously departed from the same pier in the same direction. Their speed is respectively equal to 20 km / h and 30 km / h After how many hours the distance between them will be equal to 25 km?
1. In the first step, let’s determine how much more the speed of the second boat is than the first.
30 – 20 = 10 kilometers.
2. In the second act we find out after what time the distance between them will be 25 kilometers.
25/10 = 2.5 hours.
Answer: In 2.5 hours.
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