If $\dfrac{a}{b} = \dfrac{c}{d} = k$, then $a$ equals

If $\dfrac{a}{b} = \dfrac{c}{d} = k$, then $a$ equals
  1. $bk$
  2. $\dfrac{b}{k}$
  3. $ck$
  4. $d k$

Solution

$a = bk$ from $\dfrac{a}{b} = k$.

Asked in: MH-SSC-9

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