A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes are equal. What is the total number of notes ?
A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes are equal. What is the total number of notes ?
A60
B90
C75
D45
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correct answer is: 90
Explanation: Let the number of each type of note be n. The total amount from each type is 1n+5n+10n=16n. Setting this equal to 480 gives n=30. Thus, the total number of notes is 3×30=90.
- Option a (60): Incorrect, as 16×60=960, which exceeds 480.
- Option b (90): Correct, as explained above.
- Option c (75): Incorrect, as 16×75=1200, which is too high.
- Option d (45): Incorrect, as 16×45=720, which is also too high.
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