Charly was about to see Maria and ask for her hand in marriage, when he met Maria's little brother. The latter told him:

*Five years ago, my sister was five times as old as me; now, she's only three times as old as me. *

How old is Maria ?

EinsteinJr
May 20, 2015

#1**+5 **

Let x be her little brother's age....so Maria's age now is 3x

And we're told that

5(x-5) = 3x - 5 simplify

5x - 25 = 3x - 5 add 25 to both sides and subtract 3x from both sides

2x = 20 divide both sides by 2

x = 10.....and that's the age of her brother, now

So.....Maria's age now = 3(10) = 30

CPhill
May 20, 2015