Question

Теплоход 3 ч шел по озеру со скоростью 23 км/ч а потом 4 ч по реке . столько километров прошел теплоход за эти 7 ч если по реке он шел на 3 км/ч быстрее чем по озеру

Answer 1

1) 3*23=69 км - прошел теплоход по озеру
2) 23+3=26 км/ч - скорость теплохода по реке
3)26*4=104 км - прошел теплоход по реке
4)104+69=173 км - прошел теплоход за эти 7 часов
Ответ: 173 км

Answer 2

Calculation of Distance Traveled by the Boat

To calculate the distance traveled by the boat, we need to consider the time spent on the lake and the time spent on the river, as well as the respective speeds of the boat on each body of water.

Given: - The boat traveled on the lake for 3 hours at a speed of 23 km/h. - The boat then traveled on the river for 4 hours at a speed 3 km/h faster than its speed on the lake.

To find the total distance traveled, we can calculate the distance traveled on the lake and the distance traveled on the river separately, and then sum them up.

Distance Traveled on the Lake

The distance traveled on the lake can be calculated by multiplying the speed of the boat on the lake (23 km/h) by the time spent on the lake (3 hours).

Distance on the lake = Speed on the lake * Time on the lake

Distance on the lake = 23 km/h * 3 hours

Distance on the lake = 69 km.

Distance Traveled on the River

The speed of the boat on the river is 3 km/h faster than its speed on the lake. Therefore, the speed on the river is 23 km/h + 3 km/h = 26 km/h.

The distance traveled on the river can be calculated by multiplying the speed of the boat on the river (26 km/h) by the time spent on the river (4 hours).

Distance on the river = Speed on the river * Time on the river

Distance on the river = 26 km/h * 4 hours

Distance on the river = 104 km.

Total Distance Traveled

To find the total distance traveled by the boat, we sum up the distance traveled on the lake and the distance traveled on the river.

Total distance traveled = Distance on the lake + Distance on the river

Total distance traveled = 69 km + 104 km

Total distance traveled = 173 km.

Therefore, the boat traveled a total distance of 173 kilometers in the 7 hours, with 69 kilometers on the lake and 104 kilometers on the river.