Question

По реке навстречу друг другу плывут два теплохода. Их скорости 25 км/ч и 20 км/ч. Через сколько часов теплоходы встретятся, если сейчас между ними 180 км? ответы

Answer 1

25+20=45 км. - общая скорость
180/45= 4 часа - встретятся

Answer 2

Problem Analysis

We have two boats traveling towards each other on a river. The speeds of the boats are given as 25 km/h and 20 km/h, and the initial distance between them is 180 km. We need to determine how many hours it will take for the boats to meet.

Solution

To solve this problem, we can use the formula: time = distance / relative speed. The relative speed is the sum of the speeds of the two boats.

Let's calculate the time it will take for the boats to meet:

1. Calculate the relative speed: 25 km/h + 20 km/h = 45 km/h. 2. Calculate the time: 180 km / 45 km/h = 4 hours.

Therefore, the two boats will meet after 4 hours.

Answer

The two boats will meet after 4 hours.