Question

The sum of the ages of three persons is $50$ years. What will be the sum of their ages after $5$ years?

• A. $60$
• B. $65$
• C. $55$
• D. $70$

Answer 1

Answer: (B)

$65$

Assumption:

Let the present ages of three persons be $x$ years, $y$ years & $z$ years, respectively.
According to the question, $x+y+z=50$

After $5$ years,

The ages of the 3 persons will be is $(x+5)$ years, $(y+5)$ years and $(z+5)$ years, respectively.

To find:
$(x+5)+(y+5)+(z+5)=?$
$⟹x+y+z+15=50+15=65$