Question : The pie chart given below shows the number of girls in six schools. The total number of girls in all these six schools is 5000. Number of girls in a particular school is shown as a percentage of total number of girls in all these six schools.
What is the ratio of the number of girls in school A to the number of girls in school E?
Option 1: 5 : 8
Option 2: 10 : 9
Option 3: 6 : 7
Option 4: 9 : 10
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Correct Answer: 10 : 9
Solution :
Total = 5000
We have to find the ratio of the number of girls in school A to the number of girls in school E
Number of girls in school A = 20% of 5000
$=\frac{20}{100}\times 5000 = 1000$
Number of girls in school E = 18% of 5000
$=\frac{18}{100}\times5000 = 900$
⇒ Ratio = $\frac{1000}{900}=\frac{10}{9}$
Hence, the correct answer is 10 : 9.
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