Discussion Forum



1)

Present ages of X and Y are in the ratio 5 : 6 respectively. Seven years hence this ratio will become 6 : 7 respectively. What is X's present age in years ?


A) 35

B) 42

C) 49

D) Cannot be determined

E) None of these

Answer:

Option A

Explanation:

Let the ages of x and Y be $5x$ years and $6x$ years respectively.
Then $\frac{5x+7}{6x+7}$
$\Leftrightarrow 7(5x+7)$
$=6(6x+7)$
$\Leftrightarrow x =7$
$\therefore$ X's present age $=5x=35$ years.