Question

Річковий катер витратив першого дня 392 л пального. Другого дня він плавав на 2 год менше і витратив 280 л пального . Скільки годин плавав катер кожного дня?

Answer 1

392-280=112(л)- на 2 год 
392+280=672(л)-за 2 дня 
112:2=56(л)- на 1 год 
672:56=12(г)
Ответ: 12 год

Answer 2

Calculation of Hours Traveled Each Day

To calculate the number of hours the boat traveled each day, we can use the information provided about the fuel consumption and the difference in hours traveled on the two days.

1. First Day Fuel Consumption: - On the first day, the riverboat consumed 392 liters of fuel.

2. Second Day Fuel Consumption: - On the second day, the riverboat consumed 280 liters of fuel. - Additionally, the riverboat traveled 2 hours less on the second day compared to the first day.

To calculate the number of hours the boat traveled each day, we can use the following approach:

Let's assume the boat traveled for x hours on the first day. Then, on the second day, it traveled (x - 2) hours.

We can set up an equation using the fuel consumption and the hours traveled on each day to solve for the number of hours traveled each day.

Calculation:

Using the fuel consumption as a basis for the calculation, we can set up the following equation:

- For the first day: 392 liters of fuel were consumed in x hours. - For the second day: 280 liters of fuel were consumed in (x - 2) hours.

We can solve for x, the number of hours traveled on the first day, using the above information.

Solution:

Let's solve for x, the number of hours traveled on the first day:

392 liters / x hours = 280 liters / (x - 2) hours

Cross-multiplying, we get:

392(x - 2) = 280x

Expanding and solving for x:

392x - 784 = 280x 112x = 784 x = 7

So, the riverboat traveled for 7 hours on the first day.

On the second day, it traveled for 7 - 2 = 5 hours.