Question

Одна машина сортирует в час 240 кв зерна, а другая за это же время- на 50 кг меньше. Сколько килограммов зерна отсортируют обе машины за 2 часа?

Answer 1

1)240-50=190(кг)-зерна сортирует вторая машина:
2)190+240=430(кг)-зерна сортируют обе машин за час;
3)430×2=860(кг)

Answer 2

1)240-50=190(кг) сортирует другая машина за 1 час
2)190×2=280(кг) сортирует вторая машина за 2 часа
3)240×2=480(кг) сортирует первая машина за 2 часа
4)480+280=760(кг)

Answer 3

Problem Analysis

We are given two machines that sort grain. One machine can sort 240 kg of grain per hour, while the other machine can sort 50 kg less than the first machine in the same amount of time. We need to determine how much grain both machines can sort in 2 hours.

Solution

To find out how much grain both machines can sort in 2 hours, we need to calculate the total amount of grain sorted by each machine in 2 hours and then add them together.

Let's start by calculating the amount of grain sorted by the first machine in 2 hours. Since the machine can sort 240 kg of grain per hour, in 2 hours it can sort:

240 kg/hour * 2 hours = 480 kg

Now, let's calculate the amount of grain sorted by the second machine in 2 hours. We know that the second machine can sort 50 kg less than the first machine in the same amount of time. So, the second machine can sort:

480 kg - 50 kg = 430 kg

Finally, we can find the total amount of grain sorted by both machines in 2 hours by adding the amounts sorted by each machine:

480 kg + 430 kg = 910 kg

Therefore, both machines can sort 910 kg of grain in 2 hours.

Answer

Both machines can sort 910 kg of grain in 2 hours.