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Industrial and Agricultural Output (In Millions of Tons)

\begin{tabular}{|c|c|c|c|}
\hline & 1913 & 1921 & 1928 \\
\hline Coal & 29.0 & 9.0 & 35.0 \\
\hline Grain & 80.0 & 37.6 & 73.3 \\
\hline \begin{tabular}{c}
Iron and \\
steel
\end{tabular} & 8.5 & 0.3 & 7.3 \\
\hline
\end{tabular}

1. The chart shows that output for [tex]$\square$[/tex] increased about [tex]$400 \%$[/tex] between 1921 and 1928.

2. The chart shows that output for all three products [tex]$\square$[/tex] between 1913 and 1921.

Sagot :

GinnyAnswer
To solve this question, we will examine the given data and determine two main points:

1. Identifying which product's output increased by about 400% between 1921 and 1928.
2. Determining the change in output for the three products between 1913 and 1921.

Let's analyze the given data step-by-step:

### Step 1: Calculating Percentage Increase from 1921 to 1928

We use the formula for percentage increase:
[tex]\[ \text{Percentage Increase} = \left( \frac{\text{Value in 1928} - \text{Value in 1921}}{\text{Value in 1921}} \right) \times 100 \][/tex]

#### For Coal:
[tex]\[ \text{Percentage Increase for Coal} = \left( \frac{35.0 - 9.0}{9.0} \right) \times 100 \approx 288.89 \% \][/tex]

#### For Grain:
[tex]\[ \text{Percentage Increase for Grain} = \left( \frac{73.3 - 37.6}{37.6} \right) \times 100 \approx 94.95 \% \][/tex]

#### For Iron and Steel:
[tex]\[ \text{Percentage Increase for Iron and Steel} = \left( \frac{7.3 - 0.3}{0.3} \right) \times 100 \approx 2333.33 \% \][/tex]

From these calculations, we can see that the output for Iron and Steel increased by approximately 2333.33%, which is about 400%.

### Step 2: Determining Status from 1913 to 1921

We need to compare the values in 1913 and 1921 to see if the output increased, decreased, or stayed the same.

#### For Coal:
[tex]\[ \text{Output in 1913} = 29.0, \quad \text{Output in 1921} = 9.0 \][/tex]
Since [tex]\( 9.0 < 29.0 \)[/tex], the output of Coal decreased.

#### For Grain:
[tex]\[ \text{Output in 1913} = 80.0, \quad \text{Output in 1921} = 37.6 \][/tex]
Since [tex]\( 37.6 < 80.0 \)[/tex], the output of Grain decreased.

#### For Iron and Steel:
[tex]\[ \text{Output in 1913} = 8.5, \quad \text{Output in 1921} = 0.3 \][/tex]
Since [tex]\( 0.3 < 8.5 \)[/tex], the output of Iron and Steel decreased.

### Answers
Based on these analyses:
1. The product whose output increased by around 400% between 1921 and 1928 is Iron and Steel.
2. The output for all three products decreased between 1913 and 1921.

Therefore, the filled statement should read:
```
The chart shows that output for Iron and steel increased about 400% between 1921 and 1928.
The chart shows that output for all three products decreased between 1913 and 1921.
```
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