A man has 480 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 ?

Options

A. 45
B. 60
C. 75
D. 90

Answer

D

Explanation

The number of notes of each denomination is equal. [Given]
Let the number of notes of each denomination = x.
According to the question, `x + 5x + 10x = 480 `
or, `16x = 480 `
or, `x = 30 [ because "one-rupee notes = "x. "So, five rupee notes = "5x "and ten rupee notes = "10x] `
So, required total number of notes = `x + x + x`
[`because` Number of notes of each denomination is equal]
`= 3x = 3 xx 30 = 90`