Question

в три коробки продавец разложил имеющиеся для продажи пряники. в одну коробку он положил половину имевшихся пряников, во вторую- треть оставшихся, а в третью - остальные 30 пряников. сколько всего пряников имеется у продавца?

Answer 1

Пусть Х -все пряники, тогда половина пряников равна 1/2*Х, а треть оставшихся равна 1/2*Х*1/3
составим и решим уравнение
Х-(1/2*Х+(1/2*Х*1/3))=30
Х-(1/2*Х+1/6*Х)=30
Х-(3/6*Х+1/6*Х)=30
Х-4/6*Х=30
2/6*Х=30
1/3*Х=30
Х=90

Answer 2

1) 30:2=15. 2)15*3=45. 3)45*2=90

Answer 3

Calculating the Total Number of Gingerbreads

To calculate the total number of gingerbreads the seller has, we can follow the information provided in the question.

Let's denote the total number of gingerbreads as G.

1. The seller put half of the gingerbreads into the first box. 2. The seller put a third of the remaining gingerbreads into the second box. 3. The remaining 30 gingerbreads were put into the third box.

We can express this information in the form of equations:

- The number of gingerbreads in the first box: G/2 - The number of gingerbreads in the second box: (G - G/2)/3 = 2G/3 - G/6 = G/3 - G/6 = G/6 - The number of gingerbreads in the third box: 30

To find the total number of gingerbreads, we can sum up the gingerbreads in all three boxes:

G/2 + G/6 + 30 = G

Now, we can solve for G.

Solving for the Total Number of Gingerbreads

To solve for G, we can combine the terms on the left-hand side of the equation:

G/2 + G/6 = 4G/6 = 2G/3

So, the equation becomes:

2G/3 + 30 = G

Subtracting 2G/3 from both sides:

30 = G - 2G/3 = 3G/3 - 2G/3 = G/3

Multiplying both sides by 3:

90 = G

Conclusion

The total number of gingerbreads the seller has is 90. This is calculated based on the information provided in the question and the subsequent mathematical analysis.