The angles in a Quadrilateral are $x, 5 x, 2 x + 10, x + 80$ Find $x$

30

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18

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35

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42

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Solution

The correct option is A $30$
The angles of Quadrilateral are $x, 5 x, 2 x + 10, x + 80$

The sum of angles in quadrilateral is $360$
$x + 5 x + 2 x + 10 + x + 80 = 360 9 x + 90 = 360 9 x = 360 - 90 9 x = 270 x = 30$

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