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Anna and Becker both participate in a bicycle race. Anna pedals 20 mph and Becker pedals at 18 mph. Anna crosses the finish line 10 minutes before Becker. How long is the race?

 Jul 10, 2021
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Their differnce in speed is   2 mph

 

 

1/6 hr * 18 m/hr = 3 miles to go when Anna finishes

 

Anna gets ahead 2 miles every hour          3 miles /2m/hr = 1.5 hr for anna to finish       1.5 hr x 20 m/hr = 30 mile bike race

 Jul 10, 2021

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