What are the average green tea consumers found for five cities together ?
Show Hint
To divide any number by 5 quickly, multiply the number by 2 and shift the decimal point one place to the left:
\[ 2380 \times 2 = 4760 \rightarrow 476.0 \]
Step 1: Understanding the Concept:
To compute the average number of green tea consumers across the five cities, we must first find the sum of all green tea consumers and then divide that sum by the total number of cities, which is 5. Key Formula or Approach:
\[ \text{Average Green Tea Consumers} = \frac{\text{Sum of Green Tea Consumers in all cities}}{\text{Total Number of Cities (5)}} \]
Step 2: Detailed Explanation:
Let us extract the green tea consumption values for each city from the table:
- City P: 570
- City Q: 370
- City R: 510
- City S: 440
- City T: 490
First, calculate the sum of these values:
\[ \text{Sum} = 570 + 370 + 510 + 440 + 490 \]
Let us add the values sequentially:
- \( 570 + 370 = 940 \)
- \( 940 + 510 = 1450 \)
- \( 1450 + 440 = 1890 \)
- \( 1890 + 490 = 2380 \)
The total number of green tea consumers is 2380.
Next, divide this sum by the number of cities (5):
\[ \text{Average} = \frac{2380}{5} = 476 \]
The average number of green tea consumers across the five cities is 476. Step 3: Final Answer:
The correct option is (B).
