Question

The question is accompanied by three statements (A), (B) and (C). You have to determine which statement(s) is/are sufficient/necessary to answer the question.
Rajnish buys 30 books and 65 pens. What money does he have to pay for this?
A. At a profit of 20% he sells all the objects for Rs.3,828.
B. The CP of one book and one pen is Rs.90.
C. The difference of sum and difference of buying price of one pen and one book is Rs.28.

• A. Only A alone is sufficient
• B. B and C together are sufficient
• C. A alone or B and C together are sufficient
• D. All together are necessary

Answer 1

Answer: (C)

A alone or B and C together are sufficient

Answer 2

By Using A alone, we can calculate the CP, or using B and C together, we can find the individual prices of pens and books, allowing us to compute the total cost.
The correct option is (C): A alone or B and C together are sufficient