The boat, moving along the river, covered the distance between the two marinas in 4 hours.
| March 11, 2021 | education
The boat, moving along the river, covered the distance between the two marinas in 4 hours. How long does it take for a boat to return, if its speed in still water is 18 km / h, and the speed of the river is 2 km / h?
1.How fast was the boat moving along the river?
18 + 2 = = 20 kilometers per hour.
2. Determine the distance between the piers.
20 * 4 = 80 kilometers.
3. Find out the speed against the current.
18 – 2 = 16 kilometers per hour.
4. Let’s find what is the time for which the boat returned back.
80/16 = 5 hours.
Answer: The time required for the return journey is 5 hours.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
