Directions: Each question below is followed by two statements I and II. You have to determine whether the data given in the statement is sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer.What is the total number of girls in the classroom?I. The ratio of the number of boys to the number of girls in the classroom is 8 : 7.II. The average marks of girls in the classroom is 15 less than the average marks of boys in the classroom. The average marks of all the students in the classroom is 64.

• A. The data in both statements I and II together are not sufficient to answer the question.
• B. The data either in statement I alone or in statement II alone are sufficient to answer the question.
• C. The data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
• D. The data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.
• E. The data in both statement I and II together are necessary to answer the question.