Chapter 5
5.22
Example 108:
The income of
X
is 25% more than that of
income of
Y
. Calculate by how much percent, the income
of
Y
is less than that of income of
X
?
(a) 18%
(b) 20%
(c) 25%
(d) 28%
Solution:
In comparison questions, the quantity with
which comparison is being done should be taken as
denominator (or base).
Let the income of
Y
=
`
100
The income of
X
=
`
100
+
25
=
`
125
For sake of comparison, we have to make income of
X
as
equal to
`
100.
If income of
X
is 100, then income of
Y
=
100 × 100
125
=
`
80
Thus, the difference
=
100 – 80
=
`
20
(a) is the correct answer.
Alternatively, ...
Get NTA UGC NET '24 Paper 1 by KVS Madaan| Teaching and Research Aptitude NET/SET/JRF |Includes 2023 Paper (2 Sets) & 23 years chapter wise solved Previous Year Questions now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
