Question

От двух пристаней расстояние между которыми 39 км одновременно навстречу друг другу отплыли 2 весельные лодки. Скорость первой лодки 8 км/ч. С какой скоростью плыла вторя лодка если они встретились через 3 ч

Answer 1

3*8=24 прошла одна
39-24= 15 осталось второй
15:3= 5 км/ч нажми спасибо!

Answer 2

Problem Analysis

We have two boats that start simultaneously from two different piers and meet each other after 3 hours. The distance between the piers is 39 km, and the speed of the first boat is 8 km/h. We need to find the speed of the second boat.

Solution

Let's assume the speed of the second boat is x km/h.

Since both boats are traveling towards each other, their combined speed is the sum of their individual speeds. Therefore, the equation for the total distance covered by both boats is:

Distance = Speed × Time

For the first boat: Distance covered by the first boat = Speed of the first boat × Time = 8 km/h × 3 hours = 24 km

For the second boat: Distance covered by the second boat = Speed of the second boat × Time = x km/h × 3 hours = 3x km

Since the total distance covered by both boats is equal to the distance between the piers (39 km), we can write the equation:

24 km + 3x km = 39 km

Simplifying the equation:

3x km = 39 km - 24 km 3x km = 15 km

Dividing both sides of the equation by 3:

x = 5 km/h

Therefore, the speed of the second boat is 5 km/h.

Answer

The second boat was traveling at a speed of 5 km/h.