A boy has Rs. 720 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ?
Choose the most appropriate option
A) 90  B) 110  C) 140  D) 135  E) 120
Let number of notes of each denomination be x.   Then x + 5x + 10x = 720   16x = 720   x = 45   Hence, total number of notes = 3x = 135   135
<result>D</result>
A boy has Rs. 720 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ?