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QUESTION
Q
A man has Rs.640 in the denominations of one rupee notes, five rupee notes and ten rupee notes. The number of notes of...
A man has Rs.640 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 ?
A
90
B
105
C
135
D
120
E
100
A
90
B
105
C
135
D
120
E
100
Solution
Let, the number of notes of each denomination be = a
Therefore,
(1 × a) + (5 × a) + (10 × a) = 640
a...
Let, the number of notes of each denomination be = a
Therefore,
(1 × a) + (5 × a) + (10 × a) = 640
a + 5a + 10a = 640
16a = 640
a = 640/16 = 40
The total number of notes that he has
= a + a + a = 3a = 3 × 40 = 120
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