The speed of the first motor ship is 18 km / h after 3 hours another motor ship left in the same direction and after 9 hours
| March 20, 2021 | education
The speed of the first motor ship is 18 km / h after 3 hours another motor ship left in the same direction and after 9 hours it caught up with the first motor ship to find the speed of the second motor ship.
We find the time that the first motor ship was on the way:
3 + 9 = 12 (h).
Knowing his speed, we find the distance that he swam:
18 * 12 = 216 (km).
The second motor ship was on the way for 9 hours and covered the same distance. We find its speed of movement:
216/9 = 24 (km / h).
Answer: the speed of the second motor ship is 24 km / h.
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