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And 'y' marks in sociology
F. G. 1 condition
1/3x =1/2y
2x=3y.......by cross multiplying
2x-3y=0 ---(1)
F.G.2 condition
X+Y=60---(2)
Multiplying equation (2)by 3,we get,
3(x+y=60)
3x+3y=180---(3)
Adding equation (2)and (3)
3x+3y=180
+
2x-3y=0
=5x=180
X=5/180
X=36
Putting the value of x in equation (2)
36 +y=60
Y=60-36
Y=24
Therefore, he obtained 24 marks in sociology