Multiple choice

What is the difference between present ages of A and S ? (I) : The ratio of the present age of A to that of S six years ago is 2 : 1. (II) : The ratio of the present age of A and S is 4 : 3.

  1. Only I

  2. Only II

  3. Either I or II

  4. Neither I nor II

  5. Both I and II
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Let A=4x, S=3x from statement II, so difference = x. From statement I: 4x/(3x-6) = 2/1, giving 4x = 6x - 12, so 2x = 12, x = 6. Difference = 6. Neither statement alone gives the answer - we need both the ratio and the historical relationship to solve.

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