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Option 4 : Both I and II are required.
From statement I:
Neha’s present age is 5 times the present age of Jyoti.
N = 5J
J = N/5
From statement II:
Five years ago Neha’s age was 25 times the age of Jyoti at that time.
N – 5 = 25(J – 5)
N – 5 = 25 J – 125
N = 25 J – 120
Substituting the value of I into II we get, or Combining I and II we get,
N = 25 J – 120
N = 25 × N/5 – 120
N = 5N – 120
N – 5N = -120
-4N = -120
N = 120/4
N = 30 years
Thus, both the statements I and II are required to answer the question
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