In which class of the school do girls make up…

In which class of the school do girls make up exactly 40% of the students?

Question 12

MediumOriginal question

The table shows the number of boys and girls in five classes of a school in Guwahati.

In which class of the school do girls make up exactly 40% of the students?

IXCorrect answerYour answerVIIICorrect answerYour answerVIICorrect answerYour answerXCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer C

Correct answer: C

Girls' share = girls ÷ (boys + girls) for each class.
VI: $\frac{55}{100} = 55\%$ . VII: $\frac{40}{100} = 40\%$ . VIII: $\frac{48}{100} = 48\%$ .
IX: $\frac{50}{122} \approx 41\%$ . X: $\frac{57}{120} = 47.5\%$ . Only class VII is exactly 40%.

Worth noting

Class IX has 50 girls out of 122, which is about 41%, not 40%. Class VIII has 48 girls out of 100, which is 48%.

Ten questions from Data Interpretation, at your own pace.

Ten questions from Data Interpretation, at your own pace.