Question

З двох міст одночасно назустріч один одному вирушили два автомобілі. Швидкість одного з них 72 км/год, а швидкість другого - в 1 1/8 раза менша. Якою буде відстань між автомобілями через 1 3/10 год після початку руху, якщо відстань між містами 272 км?

Answer 1

Ответ:

95,2

Пошаговое объяснение:

72÷1 1/8=72·8/9=8·8=64 км/ч - скорость 2-го автомобиля.

272-1 3/10(72+64)=272 -13/10 ·136=272-176,8=95,2 км будет между автомобилями через 1 3/10 ч

Answer 2

Problem Analysis

We have two cars traveling towards each other. The speed of one car is 72 km/h, and the speed of the other car is 1 1/8 times smaller. We need to find the distance between the cars after 1 3/10 hours of travel, given that the distance between the cities is 272 km.

Calculation

Let's calculate the speed of the second car first. We know that the speed of the second car is 1 1/8 times smaller than the speed of the first car.

The speed of the second car = (1 - 1/8) * 72 km/h = (7/8) * 72 km/h = 63 km/h.

Now, let's calculate the total distance covered by both cars after 1 3/10 hours.

The distance covered by the first car = speed * time = 72 km/h * 1 3/10 hours = 72 km/h * (13/10) hours = 93.6 km.

The distance covered by the second car = speed * time = 63 km/h * 1 3/10 hours = 63 km/h * (13/10) hours = 81.9 km.

The total distance covered by both cars = distance covered by the first car + distance covered by the second car = 93.6 km + 81.9 km = 175.5 km.

Finally, let's calculate the distance between the cars after 1 3/10 hours.

The distance between the cars = distance between the cities - total distance covered by both cars = 272 km - 175.5 km = 96.5 km.

Answer

The distance between the cars after 1 3/10 hours of travel will be 96.5 km.

Note: The above calculations are based on the given information and assumptions.