The following question consists of two statements I and II are given below. You have to decide whether the data provided in the statements are sufficient to answer the question.
Find the average score for all the juniors and seniors combined.
I. The average of the scores was 85 for juniors and 89 for seniors.
II. The group are all equal size.
(a) The data in statement I alone was sufficient to the answer the question while II alone not sufficient to the answer the question.
(b) Data in statement II alone are sufficient to answer the question while data in statement I alone are not sufficient to answer the questions.
(c) The data in statement I alone or in statement II alone are sufficient to answer the questions.
(d) The data in both statements I and II are sufficient to answer the question.
The following question consists of two statements I and II are given below. You have to decide whether the data provided in the statements are sufficient to answer the question.
Find the average score for all the juniors and seniors combined.
I. The average of the scores was 85 for juniors and 89 for seniors.
II. The group are all equal size.
(a) The data in statement I alone was sufficient to the answer the question while II alone not sufficient to the answer the question.
(b) Data in statement II alone are sufficient to answer the question while data in statement I alone are not sufficient to answer the questions.
(c) The data in statement I alone or in statement II alone are sufficient to answer the questions.
(d) The data in both statements I and II are sufficient to answer the question.
From I and II, we have:
Let each group have students.
Then, the average score for all =
So, both I and II together give the answer.