Two motor ships move towards each other, the own speed of a motor ship going downstream is 20.8 km / h
| May 1, 2021 | education
Two motor ships move towards each other, the own speed of a motor ship going downstream is 20.8 km / h, and a motor ship going against the current 19.4 km / h after what time will the motor ships meet if now there is 140.7 km between them and the speed of the current is 1.8 km / hour?
1. Let’s determine at what speed the motor ship goes downstream.
20.8 + 1.8 = 22.6 kilometers per hour.
2. Find out the speed of the ship, which goes against the current.
19.4 – 1.8 = 17.6 kilometers per hour.
3. Let’s find how many kilometers closer to each other they will be in an hour.
22.6 + 17.6 = 40.2 kilometers.
4. Let’s calculate after what time their meeting will take place.
140.7 / 40.2 = 3.5 hours.
Answer: 3.5 hours.
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