Question

По течению только!! Теплоход шёл по озеру 3ч со скоростью 27км/ч, а потом 4ч по реке, впадающей в это озеро. Найдите весь путь, который прошёл теплоход за эти 7ч, если скорость течения реки 3км/ч

Answer 1

Ответ:

27 - 3 = 24 (км/ч) - скорость теплохода против течения.  

2) 3*27=81 (км - за 3 часа  

3) 4*24=96 (км) - за 4 часа  

4) 81+96=177 (км)

Пошаговое объяснение:

Answer 2

Calculation of the Total Distance Traveled by the Boat

To find the total distance traveled by the boat, we need to calculate the distance covered while traveling on the lake and the distance covered while traveling on the river.

1. Distance covered on the lake: - The boat traveled on the lake for 3 hours at a speed of 27 km/h. - Therefore, the distance covered on the lake can be calculated using the formula: distance = speed × time. - Substituting the given values, we get: distance = 27 km/h × 3 h = 81 km.

2. Distance covered on the river: - The boat traveled on the river for 4 hours at a speed of 27 km/h (boat's speed) minus 3 km/h (current's speed). - The effective speed of the boat on the river is 27 km/h - 3 km/h = 24 km/h. - Therefore, the distance covered on the river can be calculated using the same formula: distance = speed × time. - Substituting the given values, we get: distance = 24 km/h × 4 h = 96 km.

3. Total distance traveled by the boat: - To find the total distance traveled by the boat, we add the distance covered on the lake and the distance covered on the river. - Adding the distances, we get: 81 km + 96 km = 177 km.

Therefore, the boat traveled a total distance of 177 km during the 7-hour journey.