SOLUTION: ill is 11 km away from joe.Both begin to walk toward each other at the same time.jill walks 2.5 km per hour. They meet in 2 hrs. How fast is joe walking?

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distance equals rate times time. total distance is 11km so lets call the distance joe walks and Jill's distance is . Jill's rate is ..lets call Joes and time for both is the same at t= .
:
11-x=2.5(2).....eq 1
x=r(2)..........eq 2
:
take x's value from eq 2 and plug it into eq 1
:
11-2r=5
:
-2r=-6
:
so Joes rate iskm per hour