LIC AAO Model Paper 4

By equation II x 2 - equation (I)
8x+6y = 118
7x-6 y = 110
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x = 8
From equation (I),
7x8-6y = 110
⇒ 6y = 110-56
= 54
⇒ y = 9
From equation (III),
8+z=15
⇒z=7
Clearly, x < y > z