Question : The given bar graph shows the number of students of two schools over six years.
In the bar graph, what is the ratio of the average of total students from school B to the average of total students from school A?
Option 1: 429 : 799
Option 2: 799 : 429
Option 3: 370 : 429
Option 4: 429 : 370
Correct Answer: 370 : 429
Solution :
As per the graph,
The total number of students from school A = 640 + 800 + 500 + 700 + 900 + 750 = 4290
The average number of students from school A = $\frac{4290}{6}$
The total number of students from school B = 550 + 820 + 600 + 750 + 500 + 480 = 3700
The average number of students from school A = $\frac{3700}{6}$
Required ratio = $\frac{3700}{6}$ : $\frac{4290}{6}$
Required ratio = 370 : 429
Hence, the correct answer is 370 : 429.
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