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What is C's present age? Statement I: Five years ago, C was half as old as D. Statement II: The sum of the present ages of C and D is 60 years, and D is 20 years older than C. Which statement(s) is/are sufficient to answer the question?

Competition practiceData Sufficiency
  • AStatement I alone is sufficient but Statement II alone is not
  • BBoth statements together are needed (neither alone is sufficient)
  • CStatement II alone is sufficient but Statement I alone is not
  • DEither statement alone is sufficient

Step-by-Step Solution

I has two unknowns and cannot be solved alone. From II, and give , so years.
Answer: C) Statement II alone is sufficient but Statement I alone is not

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