Question

Мотоциклисту нужно проехать за 3 дня 545 км. В первый день он ехал 3 часа со скоростью 55 км в час , во второй день он ехал такое же время со скоростью 60 км в час . С какой скоростью он должен ехать в третий день, чтобы преодолеть оставшийся путь за 4 часа

Answer 1

1) 55×3= 165 (км ) 1 день 2) 60×3=180 (км) 2 день 3) 165+180=345 (км) 1 и 2 день 4) 545-345=200 (км) 3 день 5) 200÷4=50 (км /ч) скорость мотоциклиста в 3 день.

Answer 2

1) 55*3=165(км) - за первый день.
2) 60*3=180(км) - за второй день.
3) 545-165-180=200(км) - за третий день.
4) 200:4=50(км/ч) - скорость.
Ответ: 50км/ч должен ехать мотоциклист.

Answer 3

Calculation of Speed for the Third Day

To calculate the speed the motorcyclist needs to travel on the third day in order to cover the remaining distance in 4 hours, we can use the formula:

Speed = Distance / Time

Let's break down the information given:

- Total distance to be covered: 545 km - Time traveled on the first day: 3 hours - Speed on the first day: 55 km/h - Time traveled on the second day: 3 hours - Speed on the second day: 60 km/h - Time available on the third day: 4 hours

To find the remaining distance after the first two days, we subtract the distance covered on the first day and the distance covered on the second day from the total distance:

Remaining distance = Total distance - Distance covered on the first day - Distance covered on the second day

Let's calculate the remaining distance:

Remaining distance = 545 km - (3 hours * 55 km/h) - (3 hours * 60 km/h)

Remaining distance = 545 km - 165 km - 180 km

Remaining distance = 200 km

Now, we can calculate the speed needed on the third day to cover the remaining distance in 4 hours:

Speed = Remaining distance / Time available on the third day

Speed = 200 km / 4 hours

Speed = 50 km/h

Therefore, the motorcyclist needs to travel at a speed of 50 km/h on the third day in order to cover the remaining distance in 4 hours.

Please note that the calculations provided are based on the information given and may not account for other factors such as road conditions or breaks taken by the motorcyclist.