Multiple choice

The questions given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question? What is the time taken by Raj from point A to other point B? I. If he walks 25% faster than his usual speed then he reaches 20 seconds earlier. II. If he walks half of his usual speed he takes 100 seconds more to reach the finishing point B.

  1. If statement I alone is sufficient but statement II alone is not sufficient.

  2. If statement II alone is sufficient but statement I alone is not sufficient.

  3. If both statements I and II together are sufficient, but neither statement alone is sufficient.

  4. If each statement alone (either I or II) is sufficient.

  5. If statement I and II together are not sufficient.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let usual speed = v and time = t. Distance = v × t. From I: 1.25v = d/(t-20) → two equations, two unknowns → solvable for t. From II: 0.5v = d/(t+100) → also solvable. Each statement alone gives sufficient data to find the time.

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