Question

Сергей ловил рыбу. за первый час он поймал 2 3/4 кг рыбы, за второй в 1 целую 3/5 раза больше. Сколько рыбы наловил Сергей за два часа ?

Answer 1

1кг = 1000грамм
3/4 кг это (1кг/4части)*3части=0.75кг плюс 2кг = 2.75кг рыбы поймал Сергей в первый час
2.75кг *  1 целую 3/5(1.6) = 4,4кг рыбы поймал Сергей за второй час
2.75кг + 4.4кг = 7.15кг рыбы поймал Сергей за два часа

Answer 2

Calculation of Fish Caught by Sergey

To calculate the total amount of fish caught by Sergey in two hours, we need to add up the fish caught in the first hour and the fish caught in the second hour.

In the first hour, Sergey caught 2 3/4 kg of fish.

In the second hour, Sergey caught 1 3/5 times more fish than in the first hour. To calculate this, we need to multiply the amount of fish caught in the first hour by 1 3/5.

Let's calculate the amount of fish caught in the second hour:

2 3/4 kg * 1 3/5 = (11/4) * (8/5) = 88/20 = 4 4/5 kg

Therefore, Sergey caught 4 4/5 kg of fish in the second hour.

To find the total amount of fish caught in two hours, we add the fish caught in the first hour to the fish caught in the second hour:

2 3/4 kg + 4 4/5 kg = (11/4) + (24/5) = 55/20 + 96/20 = 151/20 = 7 11/20 kg

Therefore, Sergey caught a total of 7 11/20 kg of fish in two hours.