shontelsims
shontelsims
16.10.2019 • 
Mathematics

Beth had planned to run an average of 6 miles per hour in a race. she had a very good race and actually ran at an average of 7 miles per hour, finishing ten minutes sooner than if she had averaged 6 miles per hour. how long was the race? 6 miles? 7 miles? 18 miles? 60 miles? 70 miles?

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