Question

Два поезда одновременно вышли из одной станции в одном направлении. Их скорости 60км/ч и 70км/ч.Какое расстояние будет между ними через 1,5 часа? Через 2часа 25 минут? Через сколько часов расстояние между ними будет равно 35 км?

Answer 1

1) 70-60 = 10 км/ч - разность скоростей

2) 10 * 1,5 = 15 км будет между поездами через 1,5 ч

3) 2 ч 25 мин = 2_25/60 ч = 2_5/12 ч

4) 10 * 2_5/12 = 10 * 29 / 12 = 290/12 = 24_ 2/12 = 24_1/6 км будет между ними через 2 ч 25 минут

5) 35 : 10 = 3,5 часа - время, через которое между поездами будет 35 км

Answer 2

Calculation of Distance between the Trains

To calculate the distance between the two trains, we can use the formula:

Distance = Speed x Time

Let's calculate the distances for the given time intervals:

1. After 1.5 hours: - Train 1's speed: 60 km/h - Train 2's speed: 70 km/h - Time: 1.5 hours

Using the formula, we can calculate the distance between the two trains after 1.5 hours: - Distance = (60 km/h + 70 km/h) x 1.5 hours = 195 km.

2. After 2 hours and 25 minutes: - Train 1's speed: 60 km/h - Train 2's speed: 70 km/h - Time: 2 hours and 25 minutes = 2.42 hours (rounded to two decimal places)

Using the formula, we can calculate the distance between the two trains after 2 hours and 25 minutes: - Distance = (60 km/h + 70 km/h) x 2.42 hours = 292.4 km (rounded to one decimal place).

3. To find the time it takes for the distance between the two trains to be 35 km: - Train 1's speed: 60 km/h - Train 2's speed: 70 km/h - Distance: 35 km

Using the formula, we can calculate the time it takes for the distance between the two trains to be 35 km: - Time = Distance / (60 km/h + 70 km/h) = 0.25 hours = 15 minutes.

Therefore, the distance between the two trains after 1.5 hours is 195 km, after 2 hours and 25 minutes is 292.4 km, and it will take 15 minutes for the distance between the two trains to be 35 km.