Answer & Explanation
ANS: 67
(1) equ =>10 + 10 + 10 = 30
(2) equ =>10 + 2X + 2X = 18 => 10 + 4X =18 => 4X =18+10=28=> X-28/4=7
(3) equ =>2X-2Y=2=> 2(7)-2Y=2=> 14-2Y=2=> -2Y=2-14=-12=> Y=6
(4) equ => Y+10*X= 6+10*7 = 6+70= 67
(1) equ =>10 + 10 + 10 = 30
(2) equ =>10 + 2X + 2X = 18 => 10 + 4X =18 => 4X =18+10=28=> X-28/4=7
(3) equ =>2X-2Y=2=> 2(7)-2Y=2=> 14-2Y=2=> -2Y=2-14=-12=> Y=6
(4) equ => Y+10*X= 6+10*7 = 6+70= 67
