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What is the present age of the son? Statement I: The father is 30 years older than his son. Statement II: After 5 years, the father will be three times as old as the son. Which statement(s) are sufficient to answer?

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

Step-by-Step Solution

Each statement alone is one equation in two unknowns. Together, F = S + 30 and F + 5 = 3(S + 5) give S = 10.
Answer: A) Both statements together are needed (neither alone is sufficient)

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