Question

В двух амбарах было 3090 кг зерна.Когда из первого амбара взяли 470 кг зерна,а из второго в 4 раза больше,то во втором амбаре зерна не осталось.Сколько зерна осталось в первом амбаре?

Answer 1

1) 470 * 4 = 1880(кг) - было во втором амбаре
2) 470 + 1880 = 2350(кг) - зерна взяли всего
3) 3090 - 2350 = 740(кг) - зерна осталось в первом амбаре
Ответ: 740 кг

Answer 2

Problem Analysis

To solve this problem, we need to determine the amount of grain left in the first barn after 470 kg of grain is taken from it and four times that amount is taken from the second barn, resulting in no grain left in the second barn.

Solution

Let's denote the amount of grain in the first barn as x kg and the amount of grain in the second barn as y kg.

1. We know that the total amount of grain in both barns is 3090 kg, so we have the equation: - x + y = 3090.

2. After taking 470 kg of grain from the first barn, the amount of grain left in the first barn is x - 470 kg.

3. From the second barn, four times the amount taken from the first barn is taken, so the amount of grain left in the second barn is y - 4(470) kg.

4. We are also given that there is no grain left in the second barn, so y - 4(470) = 0.

Calculation

We can solve the system of equations to find the value of x.

Substitute the value of y from the first equation into the second equation: - x - 4(470) = 0 - x - 1880 = 0 - x = 1880

Answer

After 470 kg of grain is taken from the first barn, there are 1880 kg of grain left in the first barn.

I hope this helps! If you have further questions, feel free to ask.