Question

In how many ways can X give Rs. 500 to Y using only Rs. 100 and Rs. 20 notes, with the condition that she
has only 16 notes of Rs. 20, and being asked to use the notes of both the denominations?
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Answer 1

Given:

x give Rs.500 to y using only Rs.100 and Rs.20 notes and condition are she has only 16 notes of Rs.20.

To find:

Find the x value

Step-by-step explanation:

$100x+20(16-x)=500$

simplify,

$100x+320-20x=500$

$80x=500-320$

$80x=180$

$x=2.25$

$=16-x$

$=(16-2.25)$

$=13.75$

Answer:

The x value in (16-x)=13.75.