Question

СНЕГОХОД ДНЁМ ПРОЕХАЛ 660 КМ ЗА 11 ЧАСОВ.Ночью он проезжает за час на 20 км меньше.Сколько километров пройдёт снегоход за 8 ночных часов?

Answer 1

1) 660:11=60 км/ч - скорость днём;
2) 60-20=40 км/ч - скорость ночью;
3) 40*8=320 км - расстояние, которое он пройдет ночью
Ответ: 320 км.

Answer 2

Calculation of Snowmobile's Speed

To calculate the speed of the snowmobile, we can use the formula: speed = distance / time.

Given that the snowmobile traveled 660 km in 11 hours during the day, we can calculate its speed during the day as follows:

Daytime speed = 660 km / 11 hours = 60 km/h.

We are also given that the snowmobile travels 20 km less per hour during the night. Therefore, the nighttime speed can be calculated as:

Nighttime speed = Daytime speed - 20 km/h.

Calculation of Distance Traveled at Night

To calculate the distance traveled by the snowmobile during 8 hours at night, we can use the formula: distance = speed x time.

Substituting the nighttime speed and the given time of 8 hours, we can calculate the distance traveled at night as follows:

Distance traveled at night = Nighttime speed x 8 hours.

Let's calculate the nighttime speed and the distance traveled at night:

Nighttime speed = Daytime speed - 20 km/h = 60 km/h - 20 km/h = 40 km/h.

Distance traveled at night = Nighttime speed x 8 hours = 40 km/h x 8 hours = 320 km.

Therefore, the snowmobile will travel 320 km during 8 nighttime hours.

Please note that the information provided is based on the given data and calculations.