Question

Поможіть решити задачу. З автовокзалу одночасно в протилежних напрямках виїхали два мікроавтобуси. Швидкість першого з них -78км на годину а другого - на 6км на год менше. Через скільки годин відстань між мікроавтобусами буде 450км

Answer 1

1) 78-6=72(км/ч) скорость второго
2) 72+78=150(км/ч) скорость удаления
3) 450:150=3 (години) 

Answer 2

Problem Analysis

We are given that two minibuses start simultaneously from an autobus station in opposite directions. The first minibus has a speed of 78 km/h, while the second minibus has a speed 6 km/h less than the first minibus. We need to determine the time it takes for the distance between the minibuses to be 450 km.

Solution

Let's assume that the time it takes for the distance between the minibuses to be 450 km is t hours.

The distance traveled by the first minibus in t hours can be calculated using the formula: distance = speed × time. Therefore, the distance traveled by the first minibus is 78t km.

Similarly, the distance traveled by the second minibus in t hours is (78 - 6)t km.

Since the minibuses are traveling in opposite directions, the total distance between them is the sum of the distances traveled by each minibus. Therefore, we have the equation:

78t + (78 - 6)t = 450

Simplifying the equation:

84t = 450

Dividing both sides of the equation by 84:

t = 450 / 84

Calculating the value of t:

t ≈ 5.3571 hours

Therefore, it will take approximately 5.3571 hours for the distance between the minibuses to be 450 km.

Answer

The distance between the minibuses will be 450 km after approximately 5.3571 hours.

Please