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What is the present age of B? Statement I: A is twice as old as B. Statement II: The sum of the ages of A and B is 45.

Competition practiceData Sufficiency
  • ABoth statements together are needed (neither alone is sufficient)
  • BEither statement alone is sufficient
  • CStatement II alone is sufficient but Statement I alone is not
  • DStatement I alone is sufficient but Statement II alone is not

Step-by-Step Solution

With and , we get so ; neither the ratio nor the sum alone fixes .
Answer: A) Both statements together are needed (neither alone is sufficient)

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