The boat moved for 0.4 hours against the current and 0.8 hours downstream. How many kilometers has the boat

| January 8, 2021 | education

The boat moved for 0.4 hours against the current and 0.8 hours downstream. How many kilometers has the boat covered during all this time, if its own speed is 3.5 km / h and the current speed is 2.5 km / h?

Let’s determine the speed with which the boat was going downstream of the water stream:
3.5 + 2.5 = 6.
Let’s determine the distance that the boat covered while sailing with the current of the water stream:
6 * 0.8 = 4.8.
Let’s determine the speed with which the boat was going against the current of the water stream:
3.5 – 2.5 = 1.
Determine the distance that the boat covered while sailing against the current of the water stream:
1 * 0.4 = 0.4.
Let’s determine the total distance covered by this boat:
4.8 + 0.4 = 5.2.
Answer: For all the time, the boat covered 5.2 kilometers.



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