Data Sufficiency · Question 9 · Medium
Data Sufficiency question 9
Each question has two statements. Decide whether the data in the statements is sufficient to answer the question.
Question: What is the price of one pen?
I. 3 pens and 2 pencils together cost ₹40.
II. 6 pens and 4 pencils together cost ₹80.
- Statement I alone is sufficient
- Statement II alone is sufficient
- Both statements together are needed
- Both statements together are not sufficient
Answer and explanation
Answer: D. Both statements together are not sufficient
Explanation: Statement II is just statement I doubled, so we effectively have only one equation in two unknowns. The price of a pen cannot be found.
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