Question 866294
ram ---x years
son y years 

5 years hence
x+5 / y+5 = 5/2

2(x+5)=5(y+5)

2x+10 = 5y+25

2x-5y=15................(1)

x-3 /y-3 = 7/2

2(x-3)=7(y-3)

2x-6=7y-21
2x-7y=-15.................(2)


2	x		-5	y	=	15	.............1											
2	x		-7	y	=	-15	.............2		
Eliminate	y								
multiply (1)by		-7							
Multiply (2) by		5							
-14	x		35	y	=	-105			
10	x		-35	y	=	-75			
Add the two equations									
-4	x				=	-180			
/	-4								
x	=	45							
plug value of			x	in (1)					
2	x		-5	y	=	15			
90			-5	y	=	15			
			-5	y	=	15		-90	
			-5	y	=	-75			
				y	=	15			
Ram 45 years , son 15 years