Discussion of Question with ID = 006 under Data-Sufficiency

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Question

You have to decide whether the data provided in the statements are sufficient to answer the question. Read the statements and give your answer.

In a class of 60 students, how many boys scored over 90% in the Chemistry test?

  1. Exactly 5 girls scored over 90% in the test.
  2. 2/3rd of the class scored over 90% in the test.
A

if statement I alone is sufficient but statement II alone is not sufficient.

B

if statement II alone is sufficient but statement I alone is not sufficient.

C

if both statements I and II together are sufficient but neither of statements alone is sufficient.

D

if each statement alone is sufficient.

Soln.
Ans: c

From statement II, it is clear that out of 60 students, 40 students scored over 90% in the test . Now it is given in statement I that 5 girls scored over 90%.

Hence, number of boys who scored more than 90% = 40 − 5 = 35.


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