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What number should replace the question mark?

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What number should replace the question mark?

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posted Feb 22 by Kapil Kapoor

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1 Answer

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72


If Rectangle- x,
Star- y,
Triangle- z,
we have
3x+y=67 --------> (1)
x+2y+z=79 --------> (2)
2y+2z=84 --------> (3)
2x+y+z=?


(3) => y+z=42, considering this in (2) --> x+y+42=79 => x+y=37, considering this in (1) --> 2x+37=67 => x=15
Then we find that y=22 and z=20
2x+y+z=72

answer Feb 22 by Hanifa Mammadov



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