Two angles forming a linear pair, one is $3$ times the other. The smaller is

Two angles forming a linear pair, one is $3$ times the other. The smaller is
  1. $45^{\circ}$
  2. $60^{\circ}$
  3. $30^{\circ}$
  4. $90^{\circ}$

Solution

$x + 3x = 180 \Rightarrow x = 45^{\circ}$.

Asked in: MH-SSC-9

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