In parallelogram $PQRS$, $\angle P = 4x$, $\angle Q = 5x$. $x$ is

In parallelogram $PQRS$, $\angle P = 4x$, $\angle Q = 5x$. $x$ is
  1. $20$
  2. $36$
  3. $40$
  4. $45$

Solution

Adjacent: $4x + 5x = 180 \Rightarrow 9x = 180 \Rightarrow x = 20$.

Asked in: MH-SSC-9

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