Question

Катер прошел расстояние между пунктами А и В со скоростью 63 км/ч за 4 часа. С какой скоростью должен двигаться катер, чтобы преодолеть это же расстояние за 3,5 часа? Решите алгебрагическим способом!!!!

Answer 1

1) 63×4=252
2) 252÷3,5=72км/ч

Answer 2

Problem Analysis

We are given that a boat traveled a distance between points A and B at a speed of 63 km/h for 4 hours. We need to find the speed at which the boat should travel to cover the same distance in 3.5 hours.

Solution

Let's assume the distance between points A and B is d km.

We know that the boat traveled the distance at a speed of 63 km/h for 4 hours. Therefore, the distance is given by:

d = speed × time

Substituting the given values:

d = 63 km/h × 4 hours

Simplifying:

d = 252 km Now, we need to find the speed at which the boat should travel to cover the same distance in 3.5 hours. Let's assume the required speed is x km/h.

Using the same formula, we can write:

d = x km/h × 3.5 hours

Substituting the value of d:

252 km = x km/h × 3.5 hours

Simplifying:

x km/h = 252 km / 3.5 hours

Calculating:

x ≈ 72 km/h

Therefore, the boat should travel at a speed of approximately 72 km/h to cover the same distance in 3.5 hours.

Answer

The boat should travel at a speed of approximately 72 km/h to cover the same distance between points A and B in 3.5 hours.