Multiple choice

A is faster than B A and B each walk 24 km The sum of their speeds is 7 km/hr and sum of times taken by them is 14 hours Then A's speed is equal to

  1. 3 km/hr

  2. 4 km/hr

  3. 5 km/hr

  4. 7 km/hr
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

Since the distance is 24 km and the sum of their times taken is 14 hours, we have the equation 24 divided by speed of A plus 24 divided by speed of B equals 14. The sum of their speeds is 7 km/hr, so testing the given values reveals that speeds of 4 km/hr and 3 km/hr fit perfectly. Since 24 divided by 4 is 6 hours and 24 divided by 3 is 8 hours, their combined time is 14 hours, meaning the faster person A has a speed of 4 km/hr.

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