SOLUTION: Morrison leaves Cincinnati at 4:00pm heading for New York City. Barbara leaves at 4:30pm on the same highway also heading for New York City. By driving 10mph faster than Morrison,

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Question 271284: Morrison leaves Cincinnati at 4:00pm heading for New York City. Barbara leaves at 4:30pm on the same highway also heading for New York City. By driving 10mph faster than Morrison, Barbara overtakes him at 7:30 pm
Morrison Rate Time Distance
Barbara Rate Time Distance.

I need help setting up the equation in the right spots
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
D=(R+10)3 BARBARA'S TRIP
D=R(3.5) MORRISON'S TRIP
3(R+10)=R(3.5)
3R+30=3.5R
3R-3.5R=-30
-.5R=-30
R=-30/-.5
R=60 MPH FOR MORRISON'S RATE.
60+10=70 MPH FOR BARBARA'S RATE.
3*70=60*3.5
210=210