SOLUTION: Mary drove to work at 40mph and got to work 1 minute late next day she went at 45 mph and got There 1 minute early how far does she live

Question 809804: Mary drove to work at 40mph and got to work 1 minute late next day she went at 45 mph and got There 1 minute early how far does she live
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the distance she must drive
Let = driving time in hrs that gets her there on time
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By substitution:

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She lives 12 mi away
check:

Divide both sides by

OK

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