Question 1159589
.
<pre>

V = 4E       (Vicky is 4 times as old as Ella)

V - E = 15   (Vicky is 15 years older than Ella)


Hence

    4E - E = 15

    3E     = 15

     E     = 15/3 = 5.


<U>ANSWER</U>.  Ella is 5 years old;  Vicky is 4*5 = 20 years old.    <U>ANSWER</U>
</pre>

Solved.