<PRE><B>Question 737518</B>
D=RT
D=(132*T)
D=231(7-T)
132T=231(7-T)
132T=1,617-231T
132T+231T=1,617
363T=1,617
T=1,617/363
T=4.45 OR 4 HOURS 27 MINUTES FOR THE 132 MPH. TRIP.
7-4.45=2.55 OR 2 HOURS 33 MINUTES FOR THE 231 MPH. TRIP.
PROOF:
D=132*4.45=587.4 MILES.
D=231*2.55=589 MILES. (DIFFERENCE DUE TO ROUNDING ERROR.)</PRE>