Question 732063
D=RT
D=R*2.7
D=(R-3)(2.7+.9)
2.7R=(R-3)*3.6
2.7R=3.6R-10.8
2.7R-3.6R=-10.8
-.9R=-10.8
R=-10.8/-.9
R=12 MPH IS THE RATE ON THE OUT TRIP.
D=12*2.7=32.4 MILES ID THE DISTACE OUT.
D=(12-3)(2.7+.9)
D=9*3.6=32.4 DITTO.
2*32.4=64.8 MILES FOR THE ROUND TRIP DIDTANCE.