Answers

2014-10-05T17:43:55+05:30
X+y=35
x*y=150
x=150/y

150/y+y=35
150+y^2=35y
y^2 -35y+150=0
 (y-5 ) (y-30)
y=5

son's age=5 
nd father's age=30


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2014-10-05T17:49:18+05:30
X+y=35
x*y=150
x=150/y
150/y+y=35
(150+y*y)/y=35
y*y-35y+150=0
y*y-30y-5y+150=0
y(y-30)-5(y-30)=0
y=5;x=30
Therefore,age of son=5;father=30
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