Question

Помогите пожалуйста! : ИЗ ДВУХ ПУНКТОВ А и В ВЫШЛИ ОДНОВРЕМЕННО ВНИЗ ПО РЕКЕ ДВЕ ЛОДКИ. СКОРОСТЬ ПЕРВОЙ ( из А) 8,5 км/ч, А СКОРОСТЬ ВТОРОЙ ( из В) 7,9 км/ ч. Через 1,8 часа первая лодка догнала вторую. КАКОВО РАССТОЯНИЕ МЕЖДУ А И В?

Answer 1

За 1,8 часа первая лодка прошла 8,5*1,8=15,3 км
                   вторая лодка 7,9*1,8=14,22 км
разность между пройденным расстоянием есть расстояние между А и В
15,3-14,22 = 1,08 км.

Answer 2

Problem Analysis

We have two boats, A and B, that start simultaneously and move downstream on a river. The speed of boat A is 8.5 km/h, and the speed of boat B is 7.9 km/h. After 1.8 hours, boat A catches up to boat B. We need to find the distance between points A and B.

Solution

To find the distance between points A and B, we can use the formula: distance = speed * time.

Let's calculate the distance traveled by each boat after 1.8 hours:

- Boat A: distance_A = speed_A * time = 8.5 km/h * 1.8 h = 15.3 km - Boat B: distance_B = speed_B * time = 7.9 km/h * 1.8 h = 14.22 km

Since boat A catches up to boat B, the distance traveled by boat A must be equal to or greater than the distance traveled by boat B. Therefore, the distance between points A and B is 15.3 km.

Answer

The distance between points A and B is 15.3 km.

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