Multiple choice

A man travels 15 km at a speed of 30 kmph, 50 km at a speed of 20 kmph and 30 km at a speed of 120 kmph. Find the time taken throughout the journey.

  1. 3.25 hours

  2. 3 hours

  3. 2.5 hours

  4. 2 hours
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A Correct answer
Explanation

The total time taken is the sum of the times for each segment of the journey. The first segment takes 15/30 = 0.5 hours, the second takes 50/20 = 2.5 hours, and the third takes 30/120 = 0.25 hours. Adding these together gives a total journey time of 3.25 hours.

AI explanation

Using the formula time equals distance divided by speed, we calculate the time for each segment of the journey. The times are 15/30 hours, 50/20 hours, and 30/120 hours, which equal 0.5 hours, 2.5 hours, and 0.25 hours. Adding these times together gives a total journey time of 3.25 hours.

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