ahlersba ahlersba

03-02-2021
Mathematics

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Mary and Janet are running in the Applehill fun run. Mary Ron’s at 7 mph Janet at 5 mph. If they start at the same time how long will it be before they are 1.5 mi apart?

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helterbrande helterbrande

03-02-2021

Should be within 45 minutes.

Work:

Mary:

rate = 7 mph ; time = t hrs. ; distance = 7t miles

Janet:

rate = 5 mph ; time = t hrs. ; distance = 5t miles

Answer Link

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