A man has Tk 480 in the denominations of one-taka notes, five-taka notes and ten-taka notes. The number of notes of each denomination is equal. What is the total number of notes that he has?

Correct Answer: 90
Let, each denomination is x 1x + 5x + 10 x = 480 16x = 480 x = 30 So total no of notes = 30 + 30 + 30 = 90