SSC CHSL 15 Oct 2020 Shift 3 Paper

© examsiri.com

Question : 43 of 100

Marks: +1, -0

X is 5 yr older than Y. The total of the current ages of X and Y is

33 {\yr}

. What will be the age of Y after

7 {\yr}

?

$22 {\yr}$
$20 {\yr}$
$14 {\yr}$
$21 {\yr}$

Solution:

Let the present ages of X and Y be

x

yr and

y

yr.
According to the question,

x=y+5

...(i)
and

x+y=33

∴

y+5+y=33

[\∵

from Eq. (i)]

2 y=33-5=28

y={28}/{2}=14 {\yr}

∴ Age of

y

after

7 {\yr}=14+7=21 {\yr}

.

© examsiri.com

Go to Question:

Prev Question

Next Question