Multiple choice

In each of the following questions, a question is followed by two statements numbered I and II. Read both the statements and answer accordingly. Ques. What of the distance travelled? (I) : If a person covers a distance in 12 hour, covering the first half at 20 kmph and the second half at 30 kmph (II) : If a person covers a distance at 30 kmph. If he decreases his speed to 25 kmph he takes two more hour to reach the destination

  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
C Correct answer
Explanation

Statement I: Average speed for two equal distances = 2×20×30/(20+30) = 24 kmph. Distance = 24×12 = 288 km. Statement II: Let distance = d, then d/30 - d/25 = 2, which gives d = 300 km. Either statement alone is sufficient.

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