Question 406563
Present age													
Katie x												
Leticia	x+21										
													
After	2years								
Katie x	+2										
Leticia	(x+21+2	)years					
(x+23)							
													
(x+23)=	2(x+2)
23=2x+4		
x-2x=4-23		
-x=-19		
Katie	age=19years							
Leticia	age=40years