Vidhan's is as much older than Vidhi as Vidhi is older than Nidhaan. If the sum of the ages of Vidhan and Nidhaan is 18 years, what is Vidhi's age (in years)?
Explanation:
Given in the question:
(Vidhan - Vidhi) = (Vidhi - Nidhaan)
⇒ Vidhan + Nidhaan = 2 × Vidhi
⇒ 18 = 2 × Vidhi
⇒ Vidhi = 9 years.
Hence, option (b).
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