Question

Отряд партизан выполняя боевое задание прошел 32.4км первые 4.5 ч они шли по дороге со скоростью 5.2 км/ч и сделали привал на 1.6 часа а остальное время шли по болоту со скоростью 2.5 км/ч . сколько времени они затратили на весь переход?

Answer 1

Сначала находим сколько км. прошёл отряд до перевала
4,5*5,2=23,4
32,4-23,4=9 км.

9/2,5=3,6
3,6+1,6+4,5=9,7 часов

Answer 2

Calculating Time Spent on the Entire Journey

To calculate the total time spent on the entire journey, we can break it down into the time spent on the road and the time spent in the swamp.

Time Spent on the Road: The first 4.5 hours were spent on the road at a speed of 5.2 km/h.

Time Spent Resting: They took a break for 1.6 hours.

Time Spent in the Swamp: The remaining distance was covered in the swamp at a speed of 2.5 km/h.

Calculating Time Spent on the Road

The distance covered on the road can be calculated using the formula: \[ \text{Distance} = \text{Speed} \times \text{Time} \]

The distance covered on the road is: \[ 5.2 \, \text{km/h} \times 4.5 \, \text{h} = 23.4 \, \text{km} \]

Calculating Time Spent in the Swamp

The distance covered in the swamp is: \[ 32.4 \, \text{km} - 23.4 \, \text{km} = 9 \, \text{km} \]

The time spent in the swamp can be calculated using the formula: \[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \]

The time spent in the swamp is: \[ \frac{9 \, \text{km}}{2.5 \, \text{km/h}} = 3.6 \, \text{h} \]

Total Time Spent on the Entire Journey

To find the total time spent on the entire journey, we add the time spent on the road, the resting time, and the time spent in the swamp: \[ 4.5 \, \text{h} + 1.6 \, \text{h} + 3.6 \, \text{h} = 9.7 \, \text{h} \]

Therefore, the partisan squad spent 9.7 hours on the entire journey.