In a triangle, $\angle A = 2x$, $\angle B = 3x$, $\angle C = 4x$. Then $x$ is

In a triangle, $\angle A = 2x$, $\angle B = 3x$, $\angle C = 4x$. Then $x$ is
  1. $20$
  2. $30$
  3. $40$
  4. $10$

Solution

$9x = 180 \Rightarrow x = 20$.

Asked in: MH-SSC-9

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