Question

Реши задачу в одной печи можно обжечь 39000 кирпечей за 6 дней а в другой - такое же количество кирпечей за 5 дней за сколько дней можно обжечь 143000 кирпичей используя одновремено обе печи

Answer 1

1) 39000:6=6500 кирпичей можно обжечь в одной печи за день
2) 39000:5=7800 кирпичей можно обжечь в другой печи за день
3)6500+7800=14300 кирпичей можно обжечь за день в двух печах
4)143000:14300=10
Ответ: за 10 дней можно обжечь 143000 кирпичей используя одновремено обе печи

Answer 2

To solve this problem, we can use the concept of work rate. Let's assume that the first oven can burn x bricks in 1 day, and the second oven can burn y bricks in 1 day.

According to the problem, the first oven can burn 39,000 bricks in 6 days. So, the work rate of the first oven is 39,000 bricks / 6 days = 6,500 bricks per day.

Similarly, the second oven can burn the same number of bricks, 39,000, in 5 days. So, the work rate of the second oven is 39,000 bricks / 5 days = 7,800 bricks per day.

Now, let's find out how many days it would take to burn 143,000 bricks using both ovens simultaneously.

Let's assume it takes t days to burn 143,000 bricks using both ovens together.

The work rate of the first oven is 6,500 bricks per day, and the work rate of the second oven is 7,800 bricks per day. So, the combined work rate of both ovens is 6,500 + 7,800 = 14,300 bricks per day.

According to the work rate formula, work rate = work / time, we can write:

14,300 bricks per day = 143,000 bricks / t days

Simplifying the equation, we get:

14,300t = 143,000

Dividing both sides by 14,300, we find:

t = 143,000 / 14,300

Calculating the value, we get:

t = 10

Therefore, it would take 10 days to burn 143,000 bricks using both ovens simultaneously.

Answer: It would take 10 days to burn 143,000 bricks using both ovens simultaneously.