Question

Each of the questions below consists of a question and two statements numbered (I) and (II). You have to decide whether the data provided in the statements are sufficient to answer the question.
What is the total number of pupils in the final year class ?
I. The number of boys in the final year class is twice as much as the number of girls in that class.
II. The sum of the ages of all the pupils in the class is 399 years and their average age is 19 years.

• A. 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
• B. 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 questions
• C. the data even in both statements (I) and (II) together are not sufficient to answer the question
• D. the data in both statement (I) and (II) together are necessary to answer the question

Answer 1

Answer: (B)

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 questions

Answer 2

The correct option is (B):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 questions