Discussion Forum

The ratio between the present ages of X and Y is 6 : 7. If Y is 4 years old than X, what will be the ratio of the ages of X and Y after 4 years ?

Answer:

Explanation:

Let X's age and Y's age are be $6x$ years and $7x$ years respectively.
Then, $7x-6x=4$ $\Leftrightarrow x =4$.
$\therefore$ Required ratio $=(6x+4) : (7x+4)$
$=28 :32$ $=7:8$.