A question is given, followed by two statements labelled I and II. Identify which of the statements is/are sufficient/necessary to answer the question.
Question:
Arvind has blue, green, and white marbles. What is the percentage of white marbles out of all the marbles he has?
Statements:
(I) The sum of blue and green marbles he has is 7.
(II) He has 3 white marbles out of 10 marbles.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Data in Statement II alone is sufficient to answer the question while data in Statement I is not
Using statement II: He has 3 white marbles out of 10 marbles.
Percentage of white marbles = (3 / 10) × 100 = 30%
So, only statement II is sufficient.