Multiple choice

Two people set off by car on a rally and take the same route which is $25$ miles long. If $A$ drives at an average speed of $50$ miles per hour and $B$ at an average speed of $60$ miles per hour, how much longer in minutes will it take $A$ to cover the course than it takes $B$?

  1. $5$ minutes
  2. $6$ minutes
  3. $8$ minutes
  4. $10$ minutes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Time for A = 25 miles / 50 mph = 0.5 hours = 30 minutes. Time for B = 25 miles / 60 mph = 25/60 hours = 25 minutes. Difference = 30 - 25 = 5 minutes.

AI explanation

Using the formula time = distance/speed, driver A takes 25/50 hours, which equals 0.5 hours or 30 minutes. Driver B takes 25/60 hours, which equals 5/12 hours or 25 minutes. The difference in their times is 30 - 25 = 5 minutes.

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