1.  A man has Rs. 480 in the denominations of one rupee notes, five rupee notes and ten rupee notes. The number of each denomination is equal. What is the total number of notes that he has?
A. 45
B. 75
C. 90
D. 120

Answer: Option C

Explanation:

Let number of notes of each denomination be x.
Then x + 5x + 10 = 480.
16 x = 480 = x = 30.
Hence, total number of notes = 3x = 90.