Question

Nandini paid using Re. 1, Rs. 2, Rs. 5, Rs. 10 notes; at least one of each. Total number of Rs. 5 and Rs. 10 notes is one more than total of Re. 1 and Rs. 2 notes. Price?
A. Nandini used total of 13 notes.
B. Price was a multiple of Rs. 10.

• A. The question can be answered by using one of the statements alone but not by using the other statement alone
• B. The question can be answered by using either of the statements alone
• C. The question can be answered by using both statements together but not by either statement alone
• D. The question cannot be answered on the basis of the two statements

Hint:

In currency mix problems, both total notes and denomination constraints are needed to find exact value.

Answer 1

The Correct Option is C

From A: Without denomination distribution, cannot find price.
From B: Knowing only that price is multiple of 10 doesn’t help alone.
Combining A and B: We can set equations for total notes and note relationship; solve to get unique total price. \[ \boxed{\text{Both statements needed}} \]